diff --git a/frontend/src/main.tsx b/frontend/src/main.tsx
index 7cd2603..7b64034 100644
--- a/frontend/src/main.tsx
+++ b/frontend/src/main.tsx
@@ -215,6 +215,12 @@ if (typeof window !== 'undefined' && !(window as any).go) {
                 SelectSQLDirectory: async (currentPath: string) => ({ success: false, message: currentPath ? '已取消' : '已取消' }),
                 ListSQLDirectory: async () => ({ success: true, data: [] }),
                 ReadSQLFile: async () => ({ success: false, message: '已取消' }),
+                CreateSQLFile: async (_directoryPath: string, _name: string) => ({ success: true, data: { filePath: '', name: _name } }),
+                CreateSQLDirectory: async (directoryPath: string, name: string) => ({ success: true, data: { directoryPath: `${directoryPath}/${name}`, name } }),
+                DeleteSQLFile: async (_filePath: string) => ({ success: true }),
+                DeleteSQLDirectory: async (_directoryPath: string) => ({ success: true }),
+                RenameSQLFile: async (_filePath: string, name: string) => ({ success: true, data: { filePath: _filePath, name } }),
+                RenameSQLDirectory: async (directoryPath: string, name: string) => ({ success: true, data: { directoryPath: `${directoryPath.replace(/[\\/][^\\/]*$/, '')}/${name}`, name } }),
                 WriteSQLFile: async (_filePath: string, _content: string) => ({ success: true }),
                 ExportSQLFile: async (_defaultName: string, _content: string) => ({ success: false, message: '浏览器 mock 不支持 SQL 文件导出' }),
                 InstallUpdateAndRestart: async () => ({ success: false }),
@@ -302,4 +308,3 @@ ReactDOM.createRoot(rootNode).render(
     {rootComponent}
   </React.StrictMode>,
 )
-
diff --git a/frontend/src/types.ts b/frontend/src/types.ts
index 38ccb05..75b5898 100644
--- a/frontend/src/types.ts
+++ b/frontend/src/types.ts
@@ -472,8 +472,8 @@ export interface ExternalSQLDirectory {
   id: string;
   name: string;
   path: string;
-  connectionId: string;
-  dbName: string;
+  connectionId?: string;
+  dbName?: string;
   createdAt: number;
 }
 
diff --git a/frontend/src/utils/externalSqlTree.test.ts b/frontend/src/utils/externalSqlTree.test.ts
index f41d2a4..d06cd5b 100644
--- a/frontend/src/utils/externalSqlTree.test.ts
+++ b/frontend/src/utils/externalSqlTree.test.ts
@@ -10,8 +10,6 @@ describe('externalSqlTree helpers', () => {
         id: 'dir-1',
         name: 'scripts',
         path: 'D:/sql/scripts',
-        connectionId: 'conn-1',
-        dbName: 'demo',
         createdAt: 1,
       },
     ];
@@ -33,14 +31,12 @@ describe('externalSqlTree helpers', () => {
     };
 
     const node = buildExternalSQLRootNode({
-      dbNodeKey: 'conn-1-demo',
-      connectionId: 'conn-1',
-      dbName: 'demo',
       directories,
       directoryTrees: trees,
     });
 
     expect(node.type).toBe('external-sql-root');
+    expect(node.key).toBe('external-sql-root');
     expect(node.title).toBe('外部 SQL 目录 (1)');
     expect(node.children).toHaveLength(1);
     expect(node.children?.[0]).toMatchObject({
@@ -65,4 +61,77 @@ describe('externalSqlTree helpers', () => {
     expect(first).toContain('demo');
     expect(first).not.toBe(second);
   });
+
+  it('filters non-sql file entries even when the backend returns them', () => {
+    const directories: ExternalSQLDirectory[] = [
+      {
+        id: 'dir-1',
+        name: 'scripts',
+        path: 'D:/sql/scripts',
+        createdAt: 1,
+      },
+    ];
+    const trees: Record<string, ExternalSQLTreeEntry[]> = {
+      'dir-1': [
+        {
+          name: 'readme.md',
+          path: 'D:/sql/scripts/readme.md',
+          isDir: false,
+        },
+        {
+          name: 'nested',
+          path: 'D:/sql/scripts/nested',
+          isDir: true,
+          children: [
+            {
+              name: 'notes.txt',
+              path: 'D:/sql/scripts/nested/notes.txt',
+              isDir: false,
+            },
+            {
+              name: 'report.SQL',
+              path: 'D:/sql/scripts/nested/report.SQL',
+              isDir: false,
+            },
+          ],
+        },
+        {
+          name: 'docs',
+          path: 'D:/sql/scripts/docs',
+          isDir: true,
+          children: [
+            {
+              name: 'manual.md',
+              path: 'D:/sql/scripts/docs/manual.md',
+              isDir: false,
+            },
+          ],
+        },
+      ],
+    };
+
+    const node = buildExternalSQLRootNode({
+      directories,
+      directoryTrees: trees,
+    });
+
+    const folderChildren = node.children?.[0].children || [];
+    const docsFolder = folderChildren.find((child) => child.title === 'docs');
+    const nestedFolder = folderChildren.find((child) => child.title === 'nested');
+    expect(folderChildren).toHaveLength(2);
+    expect(docsFolder).toMatchObject({
+      title: 'docs',
+      type: 'external-sql-folder',
+    });
+    expect(docsFolder?.children).toBeUndefined();
+    expect(nestedFolder).toMatchObject({
+      title: 'nested',
+      type: 'external-sql-folder',
+    });
+    expect(nestedFolder?.children).toHaveLength(1);
+    expect(nestedFolder?.children?.[0]).toMatchObject({
+      title: 'report.SQL',
+      type: 'external-sql-file',
+    });
+  });
 });
diff --git a/frontend/src/utils/externalSqlTree.ts b/frontend/src/utils/externalSqlTree.ts
index 380ad23..a1cfaa6 100644
--- a/frontend/src/utils/externalSqlTree.ts
+++ b/frontend/src/utils/externalSqlTree.ts
@@ -16,9 +16,9 @@ export interface ExternalSQLTreeNode {
 }
 
 type BuildExternalSQLRootNodeParams = {
-  dbNodeKey: string;
-  connectionId: string;
-  dbName: string;
+  dbNodeKey?: string;
+  connectionId?: string;
+  dbName?: string;
   directories: ExternalSQLDirectory[];
   directoryTrees: Record<string, ExternalSQLTreeEntry[]>;
 };
@@ -35,7 +35,7 @@ const resolveDirectoryDisplayName = (directory: ExternalSQLDirectory): string =>
 };
 
 export const buildExternalSQLDirectoryId = (connectionId: string, dbName: string, directoryPath: string): string =>
-  `external-sql-dir:${String(connectionId || '').trim()}:${String(dbName || '').trim()}:${normalizeExternalSQLPath(directoryPath)}`;
+  `external-sql-dir:${normalizeExternalSQLPath(directoryPath)}`;
 
 export const buildExternalSQLTabId = (connectionId: string, dbName: string, filePath: string): string =>
   `external-sql-tab:${String(connectionId || '').trim()}:${String(dbName || '').trim()}:${normalizeExternalSQLPath(filePath)}`;
@@ -43,14 +43,20 @@ export const buildExternalSQLTabId = (connectionId: string, dbName: string, file
 const buildExternalSQLNodeKey = (type: ExternalSQLNodeType, base: string): string =>
   `${type}:${normalizeExternalSQLPath(base)}`;
 
+const isExternalSQLFileEntry = (entry: ExternalSQLTreeEntry): boolean => {
+  const name = String(entry.name || '').trim();
+  const path = normalizeExternalSQLPath(entry.path);
+  return /\.sql$/i.test(name) || /\.sql$/i.test(path);
+};
+
 const mapExternalSQLTreeEntries = (
   entries: ExternalSQLTreeEntry[],
   context: { connectionId: string; dbName: string; dbNodeKey: string; directoryId: string },
-): ExternalSQLTreeNode[] => entries.map((entry) => {
+): ExternalSQLTreeNode[] => entries.flatMap((entry): ExternalSQLTreeNode[] => {
   const entryPath = normalizeExternalSQLPath(entry.path);
   if (entry.isDir) {
     const children = mapExternalSQLTreeEntries(entry.children || [], context);
-    return {
+    return [{
       title: entry.name,
       key: buildExternalSQLNodeKey('external-sql-folder', entryPath),
       type: 'external-sql-folder',
@@ -64,10 +70,14 @@ const mapExternalSQLTreeEntries = (
         path: entry.path,
         name: entry.name,
       },
-    };
+    }];
   }
 
-  return {
+  if (!isExternalSQLFileEntry(entry)) {
+    return [];
+  }
+
+  return [{
     title: entry.name,
     key: buildExternalSQLNodeKey('external-sql-file', entryPath),
     type: 'external-sql-file',
@@ -80,13 +90,13 @@ const mapExternalSQLTreeEntries = (
       path: entry.path,
       name: entry.name,
     },
-  };
+  }];
 });
 
 export const buildExternalSQLRootNode = ({
-  dbNodeKey,
-  connectionId,
-  dbName,
+  dbNodeKey = 'external-sql-root',
+  connectionId = '',
+  dbName = '',
   directories,
   directoryTrees,
 }: BuildExternalSQLRootNodeParams): ExternalSQLTreeNode => {
@@ -118,7 +128,7 @@ export const buildExternalSQLRootNode = ({
 
   return {
     title: children.length > 0 ? `外部 SQL 目录 (${children.length})` : '外部 SQL 目录',
-    key: `${dbNodeKey}-external-sql`,
+    key: dbNodeKey === 'external-sql-root' ? 'external-sql-root' : `${dbNodeKey}-external-sql`,
     type: 'external-sql-root',
     isLeaf: children.length === 0,
     children: children.length > 0 ? children : undefined,
diff --git a/frontend/src/utils/sidebarLocate.test.ts b/frontend/src/utils/sidebarLocate.test.ts
index 8b73688..93af743 100644
--- a/frontend/src/utils/sidebarLocate.test.ts
+++ b/frontend/src/utils/sidebarLocate.test.ts
@@ -122,6 +122,29 @@ describe('sidebarLocate', () => {
     });
   });
 
+  it('builds and resolves locate requests from external SQL file query tabs', () => {
+    const request = normalizeSidebarLocateObjectRequestFromTab({
+      id: 'external-sql-tab:conn-1:main:/Users/me/sql/report.sql',
+      type: 'query',
+      connectionId: 'conn-1',
+      dbName: 'main',
+      filePath: '/Users/me/sql/report.sql',
+    });
+
+    expect(request).toMatchObject({
+      connectionId: 'conn-1',
+      dbName: 'main',
+      filePath: '/Users/me/sql/report.sql',
+      objectGroup: 'externalSqlFiles',
+    });
+
+    expect(resolveSidebarLocateTarget(request!, { groupBySchema: false })).toMatchObject({
+      objectGroupKey: 'external-sql-root',
+      expectedAncestorKeys: ['external-sql-root'],
+      filePath: '/Users/me/sql/report.sql',
+    });
+  });
+
   it('keeps StarRocks materialized view tabs on the materialized views branch', () => {
     const request = normalizeSidebarLocateObjectRequestFromTab({
       id: 'view-def-conn-1-main-sales.mv_daily',
@@ -285,4 +308,38 @@ describe('sidebarLocate', () => {
       'conn-1-main-routine-reporting.refresh_stats',
     ]);
   });
+
+  it('finds external SQL file paths from loaded tree data', () => {
+    const target = resolveSidebarLocateTarget({
+      filePath: 'C:\\Users\\me\\sql\\report.sql',
+      objectGroup: 'externalSqlFiles',
+    }, { groupBySchema: false });
+
+    const tree = [
+      {
+        key: 'external-sql-root',
+        type: 'external-sql-root',
+        children: [
+          {
+            key: 'external-sql-directory:C:/Users/me/sql',
+            type: 'external-sql-directory',
+            dataRef: { path: 'C:/Users/me/sql' },
+            children: [
+              {
+                key: 'external-sql-file:C:/Users/me/sql/report.sql',
+                type: 'external-sql-file',
+                dataRef: { path: 'C:/Users/me/sql/report.sql' },
+              },
+            ],
+          },
+        ],
+      },
+    ];
+
+    expect(findSidebarNodePathForLocate(tree, target)).toEqual([
+      'external-sql-root',
+      'external-sql-directory:C:/Users/me/sql',
+      'external-sql-file:C:/Users/me/sql/report.sql',
+    ]);
+  });
 });
diff --git a/frontend/src/utils/sidebarLocate.ts b/frontend/src/utils/sidebarLocate.ts
index 88f8b89..d5f7a26 100644
--- a/frontend/src/utils/sidebarLocate.ts
+++ b/frontend/src/utils/sidebarLocate.ts
@@ -1,14 +1,26 @@
-export type SidebarLocateObjectGroup = 'tables' | 'views' | 'materializedViews' | 'triggers' | 'routines';
+export type SidebarLocateObjectGroup = 'tables' | 'views' | 'materializedViews' | 'triggers' | 'routines' | 'externalSqlFiles';
+export type SidebarLocateDatabaseObjectGroup = Exclude<SidebarLocateObjectGroup, 'externalSqlFiles'>;
 
-export interface SidebarLocateObjectRequest {
+export interface SidebarLocateDatabaseObjectRequest {
   tabId?: string;
   connectionId: string;
   dbName: string;
   tableName: string;
   schemaName?: string;
-  objectGroup: SidebarLocateObjectGroup;
+  objectGroup: SidebarLocateDatabaseObjectGroup;
 }
 
+export interface SidebarLocateExternalSQLFileRequest {
+  tabId?: string;
+  connectionId?: string;
+  dbName?: string;
+  filePath: string;
+  fileName?: string;
+  objectGroup: 'externalSqlFiles';
+}
+
+export type SidebarLocateObjectRequest = SidebarLocateDatabaseObjectRequest | SidebarLocateExternalSQLFileRequest;
+
 export interface SidebarLocateTarget {
   connectionKey: string;
   databaseKey: string;
@@ -21,6 +33,7 @@ export interface SidebarLocateTarget {
   dbName: string;
   tableName: string;
   schemaName: string;
+  filePath?: string;
 }
 
 export interface SidebarLocateTreeNodeLike {
@@ -40,10 +53,13 @@ export interface SidebarLocateTabLike {
   viewKind?: string;
   triggerName?: string;
   routineName?: string;
+  filePath?: string;
 }
 
 const toTrimmedString = (value: unknown): string => String(value ?? '').trim();
 
+const normalizeExternalSQLLocatePath = (value: unknown): string => toTrimmedString(value).replace(/\\/g, '/');
+
 export const splitSidebarQualifiedName = (qualifiedName: string): { schemaName: string; objectName: string } => {
   const raw = toTrimmedString(qualifiedName);
   if (!raw) return { schemaName: '', objectName: '' };
@@ -55,7 +71,7 @@ export const splitSidebarQualifiedName = (qualifiedName: string): { schemaName:
   };
 };
 
-const inferObjectGroup = (detail: Record<string, unknown>, connectionId: string, dbName: string): SidebarLocateObjectGroup => {
+const inferObjectGroup = (detail: Record<string, unknown>, connectionId: string, dbName: string): SidebarLocateDatabaseObjectGroup => {
   const explicitGroup = toTrimmedString(detail.objectGroup);
   if (explicitGroup === 'views' || explicitGroup === 'view') return 'views';
   if (explicitGroup === 'materializedViews' || explicitGroup === 'materialized-view') return 'materializedViews';
@@ -80,6 +96,18 @@ const inferObjectGroup = (detail: Record<string, unknown>, connectionId: string,
 
 export const normalizeSidebarLocateObjectRequest = (detail: unknown): SidebarLocateObjectRequest | null => {
   const raw = (detail || {}) as Record<string, unknown>;
+  const filePath = normalizeExternalSQLLocatePath(raw.filePath);
+  if (filePath) {
+    return {
+      tabId: toTrimmedString(raw.tabId) || undefined,
+      connectionId: toTrimmedString(raw.connectionId) || undefined,
+      dbName: toTrimmedString(raw.dbName) || undefined,
+      filePath,
+      fileName: toTrimmedString(raw.fileName || raw.title) || undefined,
+      objectGroup: 'externalSqlFiles',
+    };
+  }
+
   const connectionId = toTrimmedString(raw.connectionId);
   const dbName = toTrimmedString(raw.dbName);
   const tableName = toTrimmedString(raw.tableName || raw.objectName || raw.viewName || raw.triggerName || raw.routineName);
@@ -103,6 +131,17 @@ export const normalizeSidebarLocateObjectRequest = (detail: unknown): SidebarLoc
 
 export const normalizeSidebarLocateObjectRequestFromTab = (tab: SidebarLocateTabLike | null | undefined): SidebarLocateObjectRequest | null => {
   if (!tab) return null;
+  const filePath = normalizeExternalSQLLocatePath(tab.filePath);
+  if (tab.type === 'query' && filePath) {
+    return normalizeSidebarLocateObjectRequest({
+      tabId: tab.id,
+      connectionId: tab.connectionId,
+      dbName: tab.dbName,
+      filePath,
+      fileName: tab.id,
+    });
+  }
+
   const objectName = tab.type === 'view-def'
     ? toTrimmedString(tab.viewName || tab.tableName)
     : tab.type === 'trigger'
@@ -129,6 +168,23 @@ export const resolveSidebarLocateTarget = (
   request: SidebarLocateObjectRequest,
   options: { groupBySchema: boolean },
 ): SidebarLocateTarget => {
+  if (request.objectGroup === 'externalSqlFiles') {
+    const filePath = normalizeExternalSQLLocatePath(request.filePath);
+    return {
+      connectionKey: toTrimmedString(request.connectionId),
+      databaseKey: request.connectionId && request.dbName ? `${request.connectionId}-${request.dbName}` : '',
+      targetKey: request.tabId || filePath,
+      objectGroup: 'externalSqlFiles',
+      objectGroupKey: 'external-sql-root',
+      expectedAncestorKeys: ['external-sql-root'],
+      connectionId: toTrimmedString(request.connectionId),
+      dbName: toTrimmedString(request.dbName),
+      tableName: request.fileName || filePath.split('/').filter(Boolean).pop() || filePath,
+      schemaName: '',
+      filePath,
+    };
+  }
+
   const connectionKey = request.connectionId;
   const databaseKey = `${request.connectionId}-${request.dbName}`;
   const fallbackTargetKey = request.objectGroup === 'materializedViews'
@@ -205,6 +261,12 @@ const matchesLocateObjectName = (target: SidebarLocateTarget, nodeObjectName: st
 
 const matchesLocateObjectNode = (node: SidebarLocateTreeNodeLike, target: SidebarLocateTarget): boolean => {
   const dataRef = node.dataRef || {};
+
+  if (target.objectGroup === 'externalSqlFiles') {
+    return node.type === 'external-sql-file'
+      && normalizeExternalSQLLocatePath(dataRef.path) === normalizeExternalSQLLocatePath(target.filePath);
+  }
+
   const nodeConnectionId = toTrimmedString(dataRef.id || dataRef.connectionId);
   const nodeDbName = toTrimmedString(dataRef.dbName);
 
diff --git a/frontend/wailsjs/go/app/App.d.ts b/frontend/wailsjs/go/app/App.d.ts
index 207e81b..6a76148 100755
--- a/frontend/wailsjs/go/app/App.d.ts
+++ b/frontend/wailsjs/go/app/App.d.ts
@@ -28,6 +28,10 @@ export function ConfigureGlobalProxy(arg1:boolean,arg2:connection.ProxyConfig):P
 
 export function CreateDatabase(arg1:connection.ConnectionConfig,arg2:string):Promise<connection.QueryResult>;
 
+export function CreateSQLDirectory(arg1:string,arg2:string):Promise<connection.QueryResult>;
+
+export function CreateSQLFile(arg1:string,arg2:string):Promise<connection.QueryResult>;
+
 export function CreateSchema(arg1:connection.ConnectionConfig,arg2:string,arg3:string):Promise<connection.QueryResult>;
 
 export function DBConnect(arg1:connection.ConnectionConfig):Promise<connection.QueryResult>;
@@ -64,6 +68,10 @@ export function DataSyncPreview(arg1:sync.SyncConfig,arg2:string,arg3:number):Pr
 
 export function DeleteConnection(arg1:string):Promise<void>;
 
+export function DeleteSQLDirectory(arg1:string):Promise<connection.QueryResult>;
+
+export function DeleteSQLFile(arg1:string):Promise<connection.QueryResult>;
+
 export function DismissSecurityUpdateReminder():Promise<app.SecurityUpdateStatus>;
 
 export function DownloadDriverPackage(arg1:string,arg2:string,arg3:string,arg4:string):Promise<connection.QueryResult>;
@@ -246,6 +254,10 @@ export function RemoveDriverPackage(arg1:string,arg2:string):Promise<connection.
 
 export function RenameDatabase(arg1:connection.ConnectionConfig,arg2:string,arg3:string):Promise<connection.QueryResult>;
 
+export function RenameSQLDirectory(arg1:string,arg2:string):Promise<connection.QueryResult>;
+
+export function RenameSQLFile(arg1:string,arg2:string):Promise<connection.QueryResult>;
+
 export function RenameTable(arg1:connection.ConnectionConfig,arg2:string,arg3:string,arg4:string):Promise<connection.QueryResult>;
 
 export function RenameView(arg1:connection.ConnectionConfig,arg2:string,arg3:string,arg4:string):Promise<connection.QueryResult>;
diff --git a/frontend/wailsjs/go/app/App.js b/frontend/wailsjs/go/app/App.js
index 6f6c076..0cfd05e 100755
--- a/frontend/wailsjs/go/app/App.js
+++ b/frontend/wailsjs/go/app/App.js
@@ -46,6 +46,14 @@ export function CreateDatabase(arg1, arg2) {
   return window['go']['app']['App']['CreateDatabase'](arg1, arg2);
 }
 
+export function CreateSQLDirectory(arg1, arg2) {
+  return window['go']['app']['App']['CreateSQLDirectory'](arg1, arg2);
+}
+
+export function CreateSQLFile(arg1, arg2) {
+  return window['go']['app']['App']['CreateSQLFile'](arg1, arg2);
+}
+
 export function CreateSchema(arg1, arg2, arg3) {
   return window['go']['app']['App']['CreateSchema'](arg1, arg2, arg3);
 }
@@ -118,6 +126,14 @@ export function DeleteConnection(arg1) {
   return window['go']['app']['App']['DeleteConnection'](arg1);
 }
 
+export function DeleteSQLDirectory(arg1) {
+  return window['go']['app']['App']['DeleteSQLDirectory'](arg1);
+}
+
+export function DeleteSQLFile(arg1) {
+  return window['go']['app']['App']['DeleteSQLFile'](arg1);
+}
+
 export function DismissSecurityUpdateReminder() {
   return window['go']['app']['App']['DismissSecurityUpdateReminder']();
 }
@@ -482,6 +498,14 @@ export function RenameDatabase(arg1, arg2, arg3) {
   return window['go']['app']['App']['RenameDatabase'](arg1, arg2, arg3);
 }
 
+export function RenameSQLDirectory(arg1, arg2) {
+  return window['go']['app']['App']['RenameSQLDirectory'](arg1, arg2);
+}
+
+export function RenameSQLFile(arg1, arg2) {
+  return window['go']['app']['App']['RenameSQLFile'](arg1, arg2);
+}
+
 export function RenameTable(arg1, arg2, arg3, arg4) {
   return window['go']['app']['App']['RenameTable'](arg1, arg2, arg3, arg4);
 }
diff --git a/internal/app/methods_file.go b/internal/app/methods_file.go
index 35acb44..19dbd22 100644
--- a/internal/app/methods_file.go
+++ b/internal/app/methods_file.go
@@ -84,6 +84,200 @@ type SQLDirectoryEntry struct {
 	Children []SQLDirectoryEntry `json:"children,omitempty"`
 }
 
+func normalizeSQLFileName(rawName string) (string, error) {
+	name := strings.TrimSpace(rawName)
+	if name == "" {
+		return "", fmt.Errorf("SQL 文件名不能为空")
+	}
+	if strings.ContainsAny(name, `/\`) || name == "." || name == ".." {
+		return "", fmt.Errorf("SQL 文件名不能包含路径分隔符")
+	}
+	if !strings.EqualFold(filepath.Ext(name), ".sql") {
+		name += ".sql"
+	}
+	return name, nil
+}
+
+func normalizeSQLDirectoryName(rawName string) (string, error) {
+	name := strings.TrimSpace(rawName)
+	if name == "" {
+		return "", fmt.Errorf("目录名不能为空")
+	}
+	if strings.ContainsAny(name, `/\`) || name == "." || name == ".." {
+		return "", fmt.Errorf("目录名不能包含路径分隔符")
+	}
+	return name, nil
+}
+
+func normalizeSQLDirectoryPath(directoryPath string) (string, error) {
+	target := strings.TrimSpace(directoryPath)
+	if target == "" {
+		return "", fmt.Errorf("目录路径不能为空")
+	}
+	if abs, err := filepath.Abs(target); err == nil {
+		target = abs
+	}
+	info, err := os.Stat(target)
+	if err != nil {
+		return "", fmt.Errorf("无法读取目录信息: %w", err)
+	}
+	if !info.IsDir() {
+		return "", fmt.Errorf("所选路径不是目录")
+	}
+	return target, nil
+}
+
+func normalizeExistingSQLDirectoryPath(directoryPath string) (string, os.FileInfo, error) {
+	target := strings.TrimSpace(directoryPath)
+	if target == "" {
+		return "", nil, fmt.Errorf("目录路径不能为空")
+	}
+	if abs, err := filepath.Abs(target); err == nil {
+		target = abs
+	}
+	info, err := os.Stat(target)
+	if err != nil {
+		return "", nil, fmt.Errorf("无法读取目录信息: %w", err)
+	}
+	if !info.IsDir() {
+		return "", nil, fmt.Errorf("所选路径不是目录")
+	}
+	return target, info, nil
+}
+
+func normalizeExistingSQLFilePath(filePath string) (string, os.FileInfo, error) {
+	target := strings.TrimSpace(filePath)
+	if target == "" {
+		return "", nil, fmt.Errorf("文件路径不能为空")
+	}
+	if abs, err := filepath.Abs(target); err == nil {
+		target = abs
+	}
+	info, err := os.Stat(target)
+	if err != nil {
+		return "", nil, fmt.Errorf("无法读取文件信息: %w", err)
+	}
+	if info.IsDir() {
+		return "", nil, fmt.Errorf("所选路径不是 SQL 文件")
+	}
+	if !strings.EqualFold(filepath.Ext(target), ".sql") {
+		return "", nil, fmt.Errorf("仅支持 SQL 文件")
+	}
+	return target, info, nil
+}
+
+func createSQLFileInDirectory(directoryPath string, rawName string) connection.QueryResult {
+	directory, err := normalizeSQLDirectoryPath(directoryPath)
+	if err != nil {
+		return connection.QueryResult{Success: false, Message: err.Error()}
+	}
+	name, err := normalizeSQLFileName(rawName)
+	if err != nil {
+		return connection.QueryResult{Success: false, Message: err.Error()}
+	}
+	target := filepath.Join(directory, name)
+	if _, err := os.Stat(target); err == nil {
+		return connection.QueryResult{Success: false, Message: "SQL 文件已存在"}
+	} else if !os.IsNotExist(err) {
+		return connection.QueryResult{Success: false, Message: fmt.Sprintf("无法读取文件信息: %v", err)}
+	}
+	if err := os.WriteFile(target, []byte(""), 0o644); err != nil {
+		return connection.QueryResult{Success: false, Message: fmt.Sprintf("无法创建 SQL 文件: %v", err)}
+	}
+	return connection.QueryResult{Success: true, Data: map[string]interface{}{"filePath": target, "name": filepath.Base(target)}}
+}
+
+func createSQLDirectoryInDirectory(parentPath string, rawName string) connection.QueryResult {
+	parent, err := normalizeSQLDirectoryPath(parentPath)
+	if err != nil {
+		return connection.QueryResult{Success: false, Message: err.Error()}
+	}
+	name, err := normalizeSQLDirectoryName(rawName)
+	if err != nil {
+		return connection.QueryResult{Success: false, Message: err.Error()}
+	}
+	target := filepath.Join(parent, name)
+	if _, err := os.Stat(target); err == nil {
+		return connection.QueryResult{Success: false, Message: "目录已存在"}
+	} else if !os.IsNotExist(err) {
+		return connection.QueryResult{Success: false, Message: fmt.Sprintf("无法读取目录信息: %v", err)}
+	}
+	if err := os.Mkdir(target, 0o755); err != nil {
+		return connection.QueryResult{Success: false, Message: fmt.Sprintf("无法创建目录: %v", err)}
+	}
+	return connection.QueryResult{Success: true, Data: map[string]interface{}{"directoryPath": target, "name": filepath.Base(target)}}
+}
+
+func deleteSQLFileByPath(filePath string) connection.QueryResult {
+	target, _, err := normalizeExistingSQLFilePath(filePath)
+	if err != nil {
+		return connection.QueryResult{Success: false, Message: err.Error()}
+	}
+	if err := os.Remove(target); err != nil {
+		return connection.QueryResult{Success: false, Message: fmt.Sprintf("无法删除 SQL 文件: %v", err)}
+	}
+	return connection.QueryResult{Success: true, Data: map[string]interface{}{"filePath": target}}
+}
+
+func deleteSQLDirectoryByPath(directoryPath string) connection.QueryResult {
+	target, _, err := normalizeExistingSQLDirectoryPath(directoryPath)
+	if err != nil {
+		return connection.QueryResult{Success: false, Message: err.Error()}
+	}
+	if err := os.Remove(target); err != nil {
+		return connection.QueryResult{Success: false, Message: fmt.Sprintf("无法删除目录: %v（仅支持删除空目录）", err)}
+	}
+	return connection.QueryResult{Success: true, Data: map[string]interface{}{"directoryPath": target}}
+}
+
+func renameSQLFileByPath(filePath string, rawName string) connection.QueryResult {
+	source, _, err := normalizeExistingSQLFilePath(filePath)
+	if err != nil {
+		return connection.QueryResult{Success: false, Message: err.Error()}
+	}
+	name, err := normalizeSQLFileName(rawName)
+	if err != nil {
+		return connection.QueryResult{Success: false, Message: err.Error()}
+	}
+	target := filepath.Join(filepath.Dir(source), name)
+	if source == target {
+		return connection.QueryResult{Success: true, Data: map[string]interface{}{"filePath": target, "name": filepath.Base(target)}}
+	}
+	if _, err := os.Stat(target); err == nil {
+		return connection.QueryResult{Success: false, Message: "目标 SQL 文件已存在"}
+	} else if !os.IsNotExist(err) {
+		return connection.QueryResult{Success: false, Message: fmt.Sprintf("无法读取目标文件信息: %v", err)}
+	}
+	if err := os.Rename(source, target); err != nil {
+		return connection.QueryResult{Success: false, Message: fmt.Sprintf("无法重命名 SQL 文件: %v", err)}
+	}
+	return connection.QueryResult{Success: true, Data: map[string]interface{}{"filePath": target, "name": filepath.Base(target)}}
+}
+
+func renameSQLDirectoryByPath(directoryPath string, rawName string) connection.QueryResult {
+	source, _, err := normalizeExistingSQLDirectoryPath(directoryPath)
+	if err != nil {
+		return connection.QueryResult{Success: false, Message: err.Error()}
+	}
+	name, err := normalizeSQLDirectoryName(rawName)
+	if err != nil {
+		return connection.QueryResult{Success: false, Message: err.Error()}
+	}
+	target := filepath.Join(filepath.Dir(source), name)
+	if source == target {
+		return connection.QueryResult{Success: true, Data: map[string]interface{}{"directoryPath": target, "name": filepath.Base(target)}}
+	}
+	if _, err := os.Stat(target); err == nil {
+		return connection.QueryResult{Success: false, Message: "目标目录已存在"}
+	} else if !os.IsNotExist(err) {
+		return connection.QueryResult{Success: false, Message: fmt.Sprintf("无法读取目标目录信息: %v", err)}
+	}
+	if err := os.Rename(source, target); err != nil {
+		return connection.QueryResult{Success: false, Message: fmt.Sprintf("无法重命名目录: %v", err)}
+	}
+	return connection.QueryResult{Success: true, Data: map[string]interface{}{"directoryPath": target, "name": filepath.Base(target)}}
+}
+
 func normalizeDirectoryDialogPath(currentDir string) string {
 	defaultDir := strings.TrimSpace(currentDir)
 	if defaultDir == "" {
@@ -140,6 +334,28 @@ func readSQLFileByPath(filePath string) connection.QueryResult {
 	return connection.QueryResult{Success: true, Data: string(content)}
 }
 
+func readSQLFileWithMetadataByPath(filePath string) connection.QueryResult {
+	result := readSQLFileByPath(filePath)
+	if !result.Success {
+		return result
+	}
+	if data, ok := result.Data.(map[string]interface{}); ok {
+		return connection.QueryResult{Success: true, Data: data}
+	}
+	selection := strings.TrimSpace(filePath)
+	if abs, err := filepath.Abs(selection); err == nil {
+		selection = abs
+	}
+	return connection.QueryResult{
+		Success: true,
+		Data: map[string]interface{}{
+			"content":  result.Data,
+			"filePath": selection,
+			"name":     filepath.Base(selection),
+		},
+	}
+}
+
 func writeSQLFileByPath(filePath string, content string) connection.QueryResult {
 	target := strings.TrimSpace(filePath)
 	if target == "" {
@@ -238,9 +454,6 @@ func buildSQLDirectoryEntries(directory string) ([]SQLDirectoryEntry, error) {
 			if childErr != nil {
 				return nil, childErr
 			}
-			if len(children) == 0 {
-				continue
-			}
 			result = append(result, SQLDirectoryEntry{
 				Name:     entry.Name(),
 				Path:     entryPath,
@@ -291,7 +504,7 @@ func (a *App) OpenSQLFile() connection.QueryResult {
 		return connection.QueryResult{Success: false, Message: "已取消"}
 	}
 
-	return readSQLFileByPath(selection)
+	return readSQLFileWithMetadataByPath(selection)
 }
 
 func (a *App) SelectSQLDirectory(currentDir string) connection.QueryResult {
@@ -347,6 +560,30 @@ func (a *App) WriteSQLFile(filePath string, content string) connection.QueryResu
 	return writeSQLFileByPath(filePath, content)
 }
 
+func (a *App) CreateSQLFile(directoryPath string, name string) connection.QueryResult {
+	return createSQLFileInDirectory(directoryPath, name)
+}
+
+func (a *App) CreateSQLDirectory(directoryPath string, name string) connection.QueryResult {
+	return createSQLDirectoryInDirectory(directoryPath, name)
+}
+
+func (a *App) DeleteSQLFile(filePath string) connection.QueryResult {
+	return deleteSQLFileByPath(filePath)
+}
+
+func (a *App) DeleteSQLDirectory(directoryPath string) connection.QueryResult {
+	return deleteSQLDirectoryByPath(directoryPath)
+}
+
+func (a *App) RenameSQLFile(filePath string, name string) connection.QueryResult {
+	return renameSQLFileByPath(filePath, name)
+}
+
+func (a *App) RenameSQLDirectory(directoryPath string, name string) connection.QueryResult {
+	return renameSQLDirectoryByPath(directoryPath, name)
+}
+
 func (a *App) ExportSQLFile(defaultName string, content string) connection.QueryResult {
 	filename, err := runtime.SaveFileDialog(a.ctx, runtime.SaveDialogOptions{
 		Title:           "导出 SQL 文件",
diff --git a/internal/app/methods_file_sql_directory_test.go b/internal/app/methods_file_sql_directory_test.go
index 49d28e9..2b7aae7 100644
--- a/internal/app/methods_file_sql_directory_test.go
+++ b/internal/app/methods_file_sql_directory_test.go
@@ -9,9 +9,13 @@ import (
 func TestBuildSQLDirectoryEntriesKeepsOnlySQLFilesAndNestedFolders(t *testing.T) {
 	root := t.TempDir()
 	nestedDir := filepath.Join(root, "nested")
+	emptyDir := filepath.Join(root, "empty")
 	if err := os.MkdirAll(nestedDir, 0o755); err != nil {
 		t.Fatalf("MkdirAll returned error: %v", err)
 	}
+	if err := os.MkdirAll(emptyDir, 0o755); err != nil {
+		t.Fatalf("MkdirAll empty returned error: %v", err)
+	}
 	if err := os.WriteFile(filepath.Join(root, "z-last.sql"), []byte("select 1;"), 0o644); err != nil {
 		t.Fatalf("WriteFile sql returned error: %v", err)
 	}
@@ -27,17 +31,20 @@ func TestBuildSQLDirectoryEntriesKeepsOnlySQLFilesAndNestedFolders(t *testing.T)
 		t.Fatalf("buildSQLDirectoryEntries returned error: %v", err)
 	}
 
-	if len(entries) != 2 {
-		t.Fatalf("expected one folder and one sql file, got %d entries", len(entries))
+	if len(entries) != 3 {
+		t.Fatalf("expected two folders and one sql file, got %d entries", len(entries))
 	}
-	if !entries[0].IsDir || entries[0].Name != "nested" {
-		t.Fatalf("expected nested directory first, got %#v", entries[0])
+	if !entries[0].IsDir || entries[0].Name != "empty" || len(entries[0].Children) != 0 {
+		t.Fatalf("expected empty directory first, got %#v", entries[0])
 	}
-	if len(entries[0].Children) != 1 || entries[0].Children[0].Name != "inner.SQL" {
-		t.Fatalf("expected nested sql child, got %#v", entries[0].Children)
+	if !entries[1].IsDir || entries[1].Name != "nested" {
+		t.Fatalf("expected nested directory second, got %#v", entries[1])
 	}
-	if entries[1].IsDir || entries[1].Name != "z-last.sql" {
-		t.Fatalf("expected top-level sql file second, got %#v", entries[1])
+	if len(entries[1].Children) != 1 || entries[1].Children[0].Name != "inner.SQL" {
+		t.Fatalf("expected nested sql child, got %#v", entries[1].Children)
+	}
+	if entries[2].IsDir || entries[2].Name != "z-last.sql" {
+		t.Fatalf("expected top-level sql file third, got %#v", entries[2])
 	}
 }
 
@@ -75,6 +82,156 @@ func TestWriteSQLFileByPathRejectsEmptyPath(t *testing.T) {
 	}
 }
 
+func TestCreateSQLFileInDirectoryCreatesEmptySQLFile(t *testing.T) {
+	root := t.TempDir()
+
+	result := createSQLFileInDirectory(root, "draft")
+	if !result.Success {
+		t.Fatalf("expected sql file create to succeed, got %#v", result)
+	}
+
+	filePath := filepath.Join(root, "draft.sql")
+	data, err := os.ReadFile(filePath)
+	if err != nil {
+		t.Fatalf("ReadFile returned error: %v", err)
+	}
+	if string(data) != "" {
+		t.Fatalf("expected empty sql file, got %q", string(data))
+	}
+}
+
+func TestCreateSQLFileInDirectoryRejectsPathTraversalName(t *testing.T) {
+	result := createSQLFileInDirectory(t.TempDir(), "../escape.sql")
+	if result.Success {
+		t.Fatalf("expected path traversal name to fail, got %#v", result)
+	}
+}
+
+func TestCreateSQLDirectoryInDirectoryCreatesEmptyDirectory(t *testing.T) {
+	root := t.TempDir()
+
+	result := createSQLDirectoryInDirectory(root, "reports")
+	if !result.Success {
+		t.Fatalf("expected sql directory create to succeed, got %#v", result)
+	}
+
+	target := filepath.Join(root, "reports")
+	info, err := os.Stat(target)
+	if err != nil {
+		t.Fatalf("Stat returned error: %v", err)
+	}
+	if !info.IsDir() {
+		t.Fatalf("expected target to be a directory")
+	}
+}
+
+func TestCreateSQLDirectoryInDirectoryRejectsPathTraversalName(t *testing.T) {
+	result := createSQLDirectoryInDirectory(t.TempDir(), "../escape")
+	if result.Success {
+		t.Fatalf("expected path traversal directory name to fail, got %#v", result)
+	}
+}
+
+func TestDeleteSQLFileByPathRemovesExistingSQLFile(t *testing.T) {
+	filePath := filepath.Join(t.TempDir(), "old.sql")
+	if err := os.WriteFile(filePath, []byte("select 1;"), 0o644); err != nil {
+		t.Fatalf("WriteFile returned error: %v", err)
+	}
+
+	result := deleteSQLFileByPath(filePath)
+	if !result.Success {
+		t.Fatalf("expected sql file delete to succeed, got %#v", result)
+	}
+	if _, err := os.Stat(filePath); !os.IsNotExist(err) {
+		t.Fatalf("expected deleted sql file to be gone, stat err=%v", err)
+	}
+}
+
+func TestDeleteSQLFileByPathRejectsNonSQLFile(t *testing.T) {
+	filePath := filepath.Join(t.TempDir(), "notes.txt")
+	if err := os.WriteFile(filePath, []byte("skip"), 0o644); err != nil {
+		t.Fatalf("WriteFile returned error: %v", err)
+	}
+
+	result := deleteSQLFileByPath(filePath)
+	if result.Success {
+		t.Fatalf("expected non sql file delete to fail, got %#v", result)
+	}
+}
+
+func TestDeleteSQLDirectoryByPathRemovesEmptyDirectory(t *testing.T) {
+	directoryPath := filepath.Join(t.TempDir(), "old")
+	if err := os.Mkdir(directoryPath, 0o755); err != nil {
+		t.Fatalf("Mkdir returned error: %v", err)
+	}
+
+	result := deleteSQLDirectoryByPath(directoryPath)
+	if !result.Success {
+		t.Fatalf("expected sql directory delete to succeed, got %#v", result)
+	}
+	if _, err := os.Stat(directoryPath); !os.IsNotExist(err) {
+		t.Fatalf("expected deleted sql directory to be gone, stat err=%v", err)
+	}
+}
+
+func TestDeleteSQLDirectoryByPathRejectsNonEmptyDirectory(t *testing.T) {
+	directoryPath := filepath.Join(t.TempDir(), "non-empty")
+	if err := os.Mkdir(directoryPath, 0o755); err != nil {
+		t.Fatalf("Mkdir returned error: %v", err)
+	}
+	if err := os.WriteFile(filepath.Join(directoryPath, "query.sql"), []byte("select 1;"), 0o644); err != nil {
+		t.Fatalf("WriteFile returned error: %v", err)
+	}
+
+	result := deleteSQLDirectoryByPath(directoryPath)
+	if result.Success {
+		t.Fatalf("expected non-empty sql directory delete to fail, got %#v", result)
+	}
+	if _, err := os.Stat(directoryPath); err != nil {
+		t.Fatalf("expected non-empty sql directory to remain, stat err=%v", err)
+	}
+}
+
+func TestRenameSQLFileByPathRenamesWithinSameDirectory(t *testing.T) {
+	root := t.TempDir()
+	source := filepath.Join(root, "old.sql")
+	if err := os.WriteFile(source, []byte("select 1;"), 0o644); err != nil {
+		t.Fatalf("WriteFile returned error: %v", err)
+	}
+
+	result := renameSQLFileByPath(source, "new-name")
+	if !result.Success {
+		t.Fatalf("expected sql file rename to succeed, got %#v", result)
+	}
+	target := filepath.Join(root, "new-name.sql")
+	if _, err := os.Stat(target); err != nil {
+		t.Fatalf("expected target sql file, got err=%v", err)
+	}
+	if _, err := os.Stat(source); !os.IsNotExist(err) {
+		t.Fatalf("expected source sql file to be gone, stat err=%v", err)
+	}
+}
+
+func TestRenameSQLDirectoryByPathRenamesWithinSameParent(t *testing.T) {
+	root := t.TempDir()
+	source := filepath.Join(root, "old")
+	if err := os.Mkdir(source, 0o755); err != nil {
+		t.Fatalf("Mkdir returned error: %v", err)
+	}
+
+	result := renameSQLDirectoryByPath(source, "new-name")
+	if !result.Success {
+		t.Fatalf("expected sql directory rename to succeed, got %#v", result)
+	}
+	target := filepath.Join(root, "new-name")
+	if info, err := os.Stat(target); err != nil || !info.IsDir() {
+		t.Fatalf("expected target sql directory, got info=%#v err=%v", info, err)
+	}
+	if _, err := os.Stat(source); !os.IsNotExist(err) {
+		t.Fatalf("expected source sql directory to be gone, stat err=%v", err)
+	}
+}
+
 func TestNormalizeSQLExportDefaultFilename(t *testing.T) {
 	tests := []struct {
 		name string
@@ -144,3 +301,29 @@ func TestReadSQLFileByPathReturnsLargeFileMetadata(t *testing.T) {
 		t.Fatalf("expected filePath %q, got %#v", filePath, data["filePath"])
 	}
 }
+
+func TestReadSQLFileWithMetadataByPathReturnsSmallFileContentAndPath(t *testing.T) {
+	filePath := filepath.Join(t.TempDir(), "report.sql")
+	if err := os.WriteFile(filePath, []byte("select 1;"), 0o644); err != nil {
+		t.Fatalf("WriteFile returned error: %v", err)
+	}
+
+	result := readSQLFileWithMetadataByPath(filePath)
+	if !result.Success {
+		t.Fatalf("expected sql file read to succeed, got %#v", result)
+	}
+
+	data, ok := result.Data.(map[string]interface{})
+	if !ok {
+		t.Fatalf("expected metadata map, got %#v", result.Data)
+	}
+	if data["content"] != "select 1;" {
+		t.Fatalf("expected content, got %#v", data["content"])
+	}
+	if data["filePath"] != filePath {
+		t.Fatalf("expected filePath %q, got %#v", filePath, data["filePath"])
+	}
+	if data["name"] != "report.sql" {
+		t.Fatalf("expected name report.sql, got %#v", data["name"])
+	}
+}