diff --git a/frontend/src/components/DefinitionViewer.object-edit.test.tsx b/frontend/src/components/DefinitionViewer.object-edit.test.tsx
index 42528b42..09877f6e 100644
--- a/frontend/src/components/DefinitionViewer.object-edit.test.tsx
+++ b/frontend/src/components/DefinitionViewer.object-edit.test.tsx
@@ -194,6 +194,47 @@ describe('DefinitionViewer object edit entry', () => {
     }));
   });
 
+  it('opens an editable query tab for event definitions', async () => {
+    storeState.connections[0].config.type = 'mysql';
+    backendApp.DBQuery.mockResolvedValue({
+      success: true,
+      data: [{
+        Event: 'daily_cleanup',
+        'Create Event': 'CREATE EVENT `daily_cleanup`\nON SCHEDULE EVERY 1 DAY\nDO DELETE FROM logs',
+      }],
+    });
+
+    let renderer: any;
+    await act(async () => {
+      renderer = create(renderWithI18n(createTab({
+        id: 'event-def-conn-1-main-daily_cleanup',
+        title: '事件: daily_cleanup',
+        type: 'event-def',
+        eventName: 'daily_cleanup',
+        viewName: undefined,
+        viewKind: undefined,
+      })));
+      await flushPromises();
+    });
+
+    const button = renderer.root.findAll((node: any) => node.type === 'button' && findButtonText(node).includes('Edit object'))[0];
+
+    await act(async () => {
+      button.props.onClick();
+    });
+
+    const query = storeState.addTab.mock.calls[0][0].query;
+    expect(storeState.addTab).toHaveBeenCalledWith(expect.objectContaining({
+      title: 'Edit Event: daily_cleanup',
+      type: 'query',
+      queryMode: 'object-edit',
+      query: expect.stringContaining('CREATE EVENT `daily_cleanup`'),
+    }));
+    expect(query).toContain('-- Edit Event: daily_cleanup');
+    expect(query).toContain('ON SCHEDULE EVERY 1 DAY');
+    expect(query).not.toContain('SHOW CREATE EVENT');
+  });
+
   it('uses SQL Server catalog metadata when loading routine definitions', async () => {
     storeState.connections[0].config.type = 'sqlserver';
     backendApp.DBQuery.mockResolvedValue({
diff --git a/frontend/src/components/Sidebar.locate-toolbar.test.tsx b/frontend/src/components/Sidebar.locate-toolbar.test.tsx
index 2c2ddd1b..926608a7 100644
--- a/frontend/src/components/Sidebar.locate-toolbar.test.tsx
+++ b/frontend/src/components/Sidebar.locate-toolbar.test.tsx
@@ -692,6 +692,23 @@ describe('Sidebar locate toolbar', () => {
     expect(onSelectSource).toContain('openSidebarObjectNode(info.node)');
   });
 
+  it('opens event edit menu with editable object SQL instead of a SHOW query', () => {
+    const sidebarSource = readSidebarSource();
+    const menuSource = readSourceFile('./sidebar/sidebarLegacyNodeMenu.tsx');
+    const actionsSource = readSourceFile('./sidebar/useSidebarObjectActions.tsx');
+    const eventMenuSource = menuSource.slice(
+      menuSource.indexOf("} else if (node.type === 'db-event') {"),
+      menuSource.indexOf("} else if (node.type === 'table') {"),
+    );
+
+    expect(sidebarSource).toContain('openEditEvent,');
+    expect(eventMenuSource).toContain('onClick: () => void openEditEvent(node)');
+    expect(eventMenuSource).not.toContain('SHOW CREATE EVENT');
+    expect(actionsSource).toContain('const openEditEvent = async (node: any) =>');
+    expect(actionsSource).toContain("queryMode: 'object-edit'");
+    expect(actionsSource).toContain('SHOW CREATE EVENT ${eventRef}');
+  });
+
   it('wires external SQL directory file actions to dedicated Wails APIs', () => {
     const source = readSidebarSource();
     const loadTablesSource = source.slice(
diff --git a/frontend/src/components/Sidebar.tsx b/frontend/src/components/Sidebar.tsx
index 2af531a6..5af46376 100644
--- a/frontend/src/components/Sidebar.tsx
+++ b/frontend/src/components/Sidebar.tsx
@@ -1929,6 +1929,7 @@ const Sidebar: React.FC<{
       handleRebindSavedQuery,
       openRoutineDefinition,
       openEventDefinition,
+      openEditEvent,
       openSequenceDefinition,
       openPackageDefinition,
       openEditRoutine,
@@ -2279,6 +2280,7 @@ const Sidebar: React.FC<{
     openEditRoutine,
     handleDropRoutine,
     openEventDefinition,
+    openEditEvent,
     openSequenceDefinition,
     openPackageDefinition,
     resolveMessagePublishTarget,
diff --git a/frontend/src/components/SidebarEditEventTab.i18n.test.ts b/frontend/src/components/SidebarEditEventTab.i18n.test.ts
index a315ecba..cf1c67ac 100644
--- a/frontend/src/components/SidebarEditEventTab.i18n.test.ts
+++ b/frontend/src/components/SidebarEditEventTab.i18n.test.ts
@@ -1,7 +1,7 @@
 import { readFileSync } from 'node:fs';
 import { describe, expect, it } from 'vitest';
 
-const source = readFileSync(new URL('./Sidebar.tsx', import.meta.url), 'utf8');
+const source = readFileSync(new URL('./sidebar/useSidebarObjectActions.tsx', import.meta.url), 'utf8');
 
 const locales = ['zh-CN', 'zh-TW', 'en-US', 'ja-JP', 'de-DE', 'ru-RU'] as const;
 const key = 'sidebar.tab.edit_event';
diff --git a/frontend/src/components/sidebar/sidebarLegacyNodeMenu.tsx b/frontend/src/components/sidebar/sidebarLegacyNodeMenu.tsx
index 0d0ab1ab..8b03e1b5 100644
--- a/frontend/src/components/sidebar/sidebarLegacyNodeMenu.tsx
+++ b/frontend/src/components/sidebar/sidebarLegacyNodeMenu.tsx
@@ -171,6 +171,7 @@ export const buildSidebarLegacyNodeMenuItems = (
     openEditRoutine,
     handleDropRoutine,
     openEventDefinition,
+    openEditEvent,
     openSequenceDefinition,
     openPackageDefinition,
     resolveMessagePublishTarget,
@@ -884,17 +885,7 @@ export const buildSidebarLegacyNodeMenuItems = (
                 key: 'edit-event-query',
                 label: t('sidebar.menu.edit_definition'),
                 icon: <EditOutlined />,
-                onClick: () => {
-                    const { eventName, dbName, id } = node.dataRef;
-                    addTab({
-                        id: `query-edit-event-${Date.now()}`,
-                        title: t('sidebar.tab.edit_event', { name: eventName }),
-                        type: 'query',
-                        connectionId: id,
-                        dbName,
-                        query: `SHOW CREATE EVENT \`${String(eventName || '').replace(/`/g, '``')}\`;`
-                    });
-                }
+                onClick: () => void openEditEvent(node)
             },
         ];
     } else if (node.type === 'table') {
diff --git a/frontend/src/components/sidebar/useSidebarObjectActions.tsx b/frontend/src/components/sidebar/useSidebarObjectActions.tsx
index 42c16b53..463f0bd1 100644
--- a/frontend/src/components/sidebar/useSidebarObjectActions.tsx
+++ b/frontend/src/components/sidebar/useSidebarObjectActions.tsx
@@ -114,6 +114,38 @@ const resolveCopyObjectNameLabel = (node: any): string => {
   return t('sidebar.copy_object_name.label.table');
 };
 
+const quoteMySqlIdentifier = (raw: string): string => `\`${String(raw || '').replace(/`/g, '``')}\``;
+
+const buildMySqlEventReference = (eventName: string, schemaName?: string): string => {
+  const parsed = splitQualifiedName(eventName);
+  const name = parsed.objectName || eventName;
+  const schema = parsed.schemaName || String(schemaName || '').trim();
+  return [schema, name]
+    .filter(Boolean)
+    .map(quoteMySqlIdentifier)
+    .join('.');
+};
+
+const ensureSidebarObjectEditSqlTerminator = (sql: string): string => {
+  const normalized = String(sql || '').trim();
+  if (!normalized) return '';
+  return /;\s*$/.test(normalized) ? normalized : `${normalized};`;
+};
+
+const extractMySqlEventCreateSql = (rows: any[]): string => {
+  if (!Array.isArray(rows) || rows.length === 0) return '';
+  for (const row of rows) {
+    const keys = Object.keys(row || {});
+    const sqlKey = keys.find(key => key.toLowerCase().includes('create event'));
+    if (!sqlKey) continue;
+    const definition = row[sqlKey];
+    if (definition !== undefined && definition !== null && String(definition).trim()) {
+      return String(definition);
+    }
+  }
+  return '';
+};
+
 export const useSidebarObjectActions = ({
   connections,
   connectionIds,
@@ -986,6 +1018,52 @@ export const useSidebarObjectActions = ({
     });
   };
 
+  const openEditEvent = async (node: any) => {
+    const conn = node.dataRef;
+    const eventName = String(conn?.eventName || '').trim();
+    const dbName = String(conn?.dbName || '').trim();
+    const id = String(conn?.id || '').trim();
+    if (!eventName) return;
+
+    const objectLabel = t('definition_viewer.object.event');
+    const header = [
+      `-- ${t('definition_viewer.edit.comment_title', { object: objectLabel, name: eventName })}`,
+      `-- ${t('definition_viewer.edit.comment_compatibility')}`,
+    ].join('\n') + '\n';
+    let template = `${header}-- ${t('definition_viewer.edit.comment_empty_definition', { name: eventName })}\n`;
+
+    try {
+      const dialect = getMetadataDialect(conn as SavedConnection);
+      if (dialect === 'mysql') {
+        const config = buildRuntimeConfig(conn, dbName);
+        const eventRef = buildMySqlEventReference(eventName, conn?.schemaName || dbName);
+        const result = await DBQuery(
+          buildRpcConnectionConfig(config) as any,
+          dbName,
+          `SHOW CREATE EVENT ${eventRef}`,
+        );
+        if (result.success) {
+          const createSql = extractMySqlEventCreateSql(result.data as any[]);
+          if (createSql) {
+            template = `${header}${ensureSidebarObjectEditSqlTerminator(createSql)}`;
+          }
+        }
+      }
+    } catch {
+      // 降级使用空编辑模板，避免把 SHOW 语句当成可编辑定义。
+    }
+
+    addTab({
+      id: `query-edit-event-${Date.now()}`,
+      title: t('sidebar.tab.edit_event', { name: eventName }),
+      type: 'query',
+      connectionId: id,
+      dbName,
+      query: template,
+      queryMode: 'object-edit',
+    });
+  };
+
   const openSequenceDefinition = (node: any) => {
     const { sequenceName, dbName, id } = node.dataRef;
     addTab({
@@ -1246,6 +1324,7 @@ export const useSidebarObjectActions = ({
     handleRebindSavedQuery,
     openRoutineDefinition,
     openEventDefinition,
+    openEditEvent,
     openSequenceDefinition,
     openPackageDefinition,
     openEditRoutine,