diff --git a/openflare_server/controller/config_version.go b/openflare_server/controller/config_version.go
index c8f5e53d..e2acd99c 100644
--- a/openflare_server/controller/config_version.go
+++ b/openflare_server/controller/config_version.go
@@ -189,3 +189,42 @@ func ActivateConfigVersion(c *gin.Context) {
 		"data":    version,
 	})
 }
+
+type CleanupConfigVersionRequest struct {
+	KeepCount int `json:"keep_count" binding:"required,min=3"`
+}
+
+// CleanupConfigVersions godoc
+// @Summary Cleanup old config versions
+// @Tags ConfigVersions
+// @Produce json
+// @Security BearerAuth
+// @Param request body CleanupConfigVersionRequest true "Cleanup request"
+// @Success 200 {object} map[string]interface{}
+// @Failure 400 {object} map[string]interface{}
+// @Router /api/config-versions/cleanup [post]
+func CleanupConfigVersions(c *gin.Context) {
+	var req CleanupConfigVersionRequest
+	if err := c.ShouldBindJSON(&req); err != nil {
+		c.JSON(http.StatusOK, gin.H{
+			"success": false,
+			"message": "参数错误",
+		})
+		return
+	}
+
+	deletedCount, err := service.CleanupConfigVersions(req.KeepCount)
+	if err != nil {
+		c.JSON(http.StatusOK, gin.H{
+			"success": false,
+			"message": err.Error(),
+		})
+		return
+	}
+
+	c.JSON(http.StatusOK, gin.H{
+		"success": true,
+		"message": "清理成功",
+		"data":    map[string]interface{}{"deleted_count": deletedCount},
+	})
+}
diff --git a/openflare_server/router/api-router.go b/openflare_server/router/api-router.go
index 25e4a09e..498ac108 100644
--- a/openflare_server/router/api-router.go
+++ b/openflare_server/router/api-router.go
@@ -149,6 +149,7 @@ func SetApiRouter(router *gin.Engine) {
 			configVersionRoute.GET("/:id", controller.GetConfigVersion)
 			configVersionRoute.POST("/publish", controller.PublishConfigVersion)
 			configVersionRoute.POST("/:id/activate", controller.ActivateConfigVersion)
+			configVersionRoute.POST("/cleanup", controller.CleanupConfigVersions)
 		}
 		dashboardRoute := apiRouter.Group("/dashboard")
 		dashboardRoute.Use(middleware.AdminAuth())
diff --git a/openflare_server/service/config_version.go b/openflare_server/service/config_version.go
index de23e5cb..fb6e4bd6 100644
--- a/openflare_server/service/config_version.go
+++ b/openflare_server/service/config_version.go
@@ -406,6 +406,34 @@ func ActivateConfigVersion(id uint) (*model.ConfigVersion, error) {
 	return version, nil
 }
 
+func CleanupConfigVersions(keepCount int) (int64, error) {
+	if keepCount < 3 {
+		keepCount = 3
+	}
+	var versions []model.ConfigVersion
+	if err := model.DB.Select("id", "is_active").Order("id desc").Find(&versions).Error; err != nil {
+		return 0, err
+	}
+	if len(versions) <= keepCount {
+		return 0, nil
+	}
+	var deleteIDs []uint
+	for i, v := range versions {
+		if i < keepCount {
+			continue
+		}
+		if v.IsActive {
+			continue
+		}
+		deleteIDs = append(deleteIDs, v.ID)
+	}
+	if len(deleteIDs) == 0 {
+		return 0, nil
+	}
+	result := model.DB.Where("id IN ?", deleteIDs).Delete(&model.ConfigVersion{})
+	return result.RowsAffected, result.Error
+}
+
 func buildCurrentConfigBundle(requireRoutes bool) (*configBundle, error) {
 	routes, err := model.GetEnabledProxyRoutes()
 	if err != nil {
diff --git a/openflare_server/web/features/config-versions/api/config-versions.ts b/openflare_server/web/features/config-versions/api/config-versions.ts
index cf9259a8..374bb301 100644
--- a/openflare_server/web/features/config-versions/api/config-versions.ts
+++ b/openflare_server/web/features/config-versions/api/config-versions.ts
@@ -38,3 +38,10 @@ export function activateConfigVersion(id: number) {
     method: 'POST',
   });
 }
+
+export function cleanupConfigVersions(payload: { keep_count: number }) {
+  return apiRequest<{ deleted_count: number }>('/config-versions/cleanup', {
+    method: 'POST',
+    body: JSON.stringify(payload),
+  });
+}
diff --git a/openflare_server/web/features/config-versions/components/cleanup-config-versions-modal.tsx b/openflare_server/web/features/config-versions/components/cleanup-config-versions-modal.tsx
new file mode 100644
index 00000000..a2198198
--- /dev/null
+++ b/openflare_server/web/features/config-versions/components/cleanup-config-versions-modal.tsx
@@ -0,0 +1,79 @@
+'use client';
+
+import { useState } from 'react';
+
+import { InlineMessage } from '@/components/feedback/inline-message';
+import { AppModal } from '@/components/ui/app-modal';
+import {
+  PrimaryButton,
+  SecondaryButton,
+} from '@/features/shared/components/resource-primitives';
+
+export function CleanupConfigVersionsModal({
+  isOpen,
+  onClose,
+  onConfirm,
+  isPending,
+}: {
+  isOpen: boolean;
+  onClose: () => void;
+  onConfirm: (keepCount: number) => void;
+  isPending: boolean;
+}) {
+  const [keepCount, setKeepCount] = useState<number>(10);
+  const [error, setError] = useState<string | null>(null);
+
+  const handleSubmit = (e: React.FormEvent) => {
+    e.preventDefault();
+    if (keepCount < 3) {
+      setError('最少保留 3 个历史快照');
+      return;
+    }
+    setError(null);
+    onConfirm(keepCount);
+  };
+
+  return (
+    <AppModal
+      isOpen={isOpen}
+      onClose={onClose}
+      title="清理历史快照"
+      description="删除旧的历史快照配置，系统将始终自动保护当前已激活的版本不被删除。"
+      size="md"
+      footer={
+        <div className="flex justify-end gap-3">
+          <SecondaryButton type="button" onClick={onClose} disabled={isPending}>
+            取消
+          </SecondaryButton>
+          <PrimaryButton type="submit" form="cleanup-form" disabled={isPending} className="bg-[var(--status-danger-foreground)] hover:bg-[var(--status-danger-foreground)] hover:opacity-90 border-[var(--status-danger-foreground)]">
+            {isPending ? '清理中...' : '确认清理'}
+          </PrimaryButton>
+        </div>
+      }
+    >
+      <form id="cleanup-form" onSubmit={handleSubmit} className="space-y-4">
+        {error && <InlineMessage tone="danger" message={error} />}
+        <div>
+          <label
+            htmlFor="keepCount"
+            className="mb-1 block text-sm font-medium text-[var(--foreground-primary)]"
+          >
+            保留最近快照个数
+          </label>
+          <input
+            id="keepCount"
+            type="number"
+            min={3}
+            value={keepCount}
+            onChange={(e) => setKeepCount(parseInt(e.target.value, 10) || 3)}
+            className="w-full rounded-lg border border-[var(--border-default)] bg-[var(--surface-default)] px-3 py-2 text-sm text-[var(--foreground-primary)] focus:border-[var(--brand-primary)] focus:ring-1 focus:ring-[var(--brand-primary)] focus:outline-none"
+            disabled={isPending}
+          />
+          <p className="mt-1 text-xs text-[var(--foreground-secondary)]">
+            默认为 10 个，最少需保留 3 个。
+          </p>
+        </div>
+      </form>
+    </AppModal>
+  );
+}
diff --git a/openflare_server/web/features/config-versions/components/config-versions-page.tsx b/openflare_server/web/features/config-versions/components/config-versions-page.tsx
index ca733d5a..7fb6a89e 100644
--- a/openflare_server/web/features/config-versions/components/config-versions-page.tsx
+++ b/openflare_server/web/features/config-versions/components/config-versions-page.tsx
@@ -17,8 +17,10 @@ import {
   getConfigVersionPreview,
   getConfigVersions,
   publishConfigVersion,
+  cleanupConfigVersions,
 } from '@/features/config-versions/api/config-versions';
 import { ConfigVersionSnapshotModal } from '@/features/config-versions/components/config-version-snapshot-modal';
+import { CleanupConfigVersionsModal } from '@/features/config-versions/components/cleanup-config-versions-modal';
 import type {
   ConfigOptionDiffItem,
   ConfigDiffResult,
@@ -404,6 +406,7 @@ export function ConfigVersionsPage() {
     diff: ConfigDiffResult;
   } | null>(null);
   const [isPreviewLoading, setIsPreviewLoading] = useState(false);
+  const [isCleanupModalOpen, setIsCleanupModalOpen] = useState(false);
 
   const versionsQuery = useQuery({
     queryKey: versionsQueryKey,
@@ -462,6 +465,21 @@ export function ConfigVersionsPage() {
     },
   });
 
+  const cleanupMutation = useMutation({
+    mutationFn: cleanupConfigVersions,
+    onSuccess: async (data) => {
+      setFeedback({
+        tone: 'success',
+        message: `成功清理 ${data.deleted_count} 个历史快照`,
+      });
+      setIsCleanupModalOpen(false);
+      await queryClient.invalidateQueries({ queryKey: versionsQueryKey });
+    },
+    onError: (error) => {
+      setFeedback({ tone: 'danger', message: getErrorMessage(error) });
+    },
+  });
+
   const handleOpenPublishPreview = async () => {
     setFeedback(null);
     setIsPreviewLoading(true);
@@ -535,16 +553,24 @@ export function ConfigVersionsPage() {
           title="历史版本"
           description="发布成功后会立即刷新列表，不再需要手动刷新页面。"
           action={
-            <SecondaryButton
-              type="button"
-              onClick={() =>
-                void queryClient.invalidateQueries({
-                  queryKey: versionsQueryKey,
-                })
-              }
-            >
-              刷新列表
-            </SecondaryButton>
+            <div className="flex gap-2">
+              <SecondaryButton
+                type="button"
+                onClick={() => setIsCleanupModalOpen(true)}
+              >
+                清理旧版本
+              </SecondaryButton>
+              <SecondaryButton
+                type="button"
+                onClick={() =>
+                  void queryClient.invalidateQueries({
+                    queryKey: versionsQueryKey,
+                  })
+                }
+              >
+                刷新列表
+              </SecondaryButton>
+            </div>
           }
         >
           {versionsQuery.isLoading ? (
@@ -630,6 +656,13 @@ export function ConfigVersionsPage() {
         version={selectedVersion}
         onClose={() => setSelectedVersionId(null)}
       />
+
+      <CleanupConfigVersionsModal
+        isOpen={isCleanupModalOpen}
+        onClose={() => setIsCleanupModalOpen(false)}
+        onConfirm={(keepCount) => cleanupMutation.mutate({ keep_count: keepCount })}
+        isPending={cleanupMutation.isPending}
+      />
     </>
   );
 }