diff --git a/domain/audit/api.py b/domain/audit/api.py
index 07b0172..ba7bfa8 100644
--- a/domain/audit/api.py
+++ b/domain/audit/api.py
@@ -62,7 +62,5 @@ async def clear_audit_logs(
 ):
     start_dt = _parse_iso(start_time, "start_time")
     end_dt = _parse_iso(end_time, "end_time")
-    if start_dt is None and end_dt is None:
-        raise HTTPException(status_code=400, detail="start_time 或 end_time 至少提供一个")
     deleted_count = await AuditService.clear_logs(start_time=start_dt, end_time=end_dt)
     return response.success({"deleted_count": deleted_count})
diff --git a/web/src/i18n/locales/en.json b/web/src/i18n/locales/en.json
index 9623c50..5baabb2 100644
--- a/web/src/i18n/locales/en.json
+++ b/web/src/i18n/locales/en.json
@@ -527,6 +527,7 @@
   "Status": "Status",
   "Confirm clear logs?": "Confirm clear logs?",
   "This will delete logs in selected range irreversibly.": "This will delete logs in selected range irreversibly.",
+  "This will delete all logs irreversibly.": "This will delete all logs irreversibly.",
   "Cleared {count} logs": "Cleared {count} logs",
   "Time": "Time",
   "Level": "Level",
diff --git a/web/src/i18n/locales/zh.json b/web/src/i18n/locales/zh.json
index 4d3ebb4..fb686f1 100644
--- a/web/src/i18n/locales/zh.json
+++ b/web/src/i18n/locales/zh.json
@@ -509,6 +509,7 @@
   "Status": "状态",
   "Confirm clear logs?": "确认清理日志?",
   "This will delete logs in selected range irreversibly.": "该操作将删除选定时间范围内的所有日志，且不可恢复。",
+  "This will delete all logs irreversibly.": "将删除全部日志且不可恢复",
   "Cleared {count} logs": "成功清理 {count} 条日志",
   "Time": "时间",
   "Level": "级别",
diff --git a/web/src/pages/AuditLogsPage.tsx b/web/src/pages/AuditLogsPage.tsx
index 62a00bf..3714901 100644
--- a/web/src/pages/AuditLogsPage.tsx
+++ b/web/src/pages/AuditLogsPage.tsx
@@ -95,13 +95,12 @@ const AuditLogsPage = memo(function AuditLogsPage() {
   }, [fetchList]);
 
   const handleClearLogs = () => {
-    if (!filters.start_time && !filters.end_time) {
-      message.warning(t('Please select time range'));
-      return;
-    }
+    const hasRange = !!(filters.start_time || filters.end_time);
     Modal.confirm({
       title: t('Confirm clear logs?'),
-      content: t('This will delete logs in selected range irreversibly.'),
+      content: hasRange
+        ? t('This will delete logs in selected range irreversibly.')
+        : t('This will delete all logs irreversibly.'),
       onOk: async () => {
         try {
           const params: any = {};