diff --git a/napcat.webui/src/components/file_manage/file_preview_modal.tsx b/napcat.webui/src/components/file_manage/file_preview_modal.tsx
index 792c127f..3bb23bfe 100644
--- a/napcat.webui/src/components/file_manage/file_preview_modal.tsx
+++ b/napcat.webui/src/components/file_manage/file_preview_modal.tsx
@@ -9,6 +9,7 @@ import {
 import { Spinner } from '@heroui/spinner'
 import { useRequest } from 'ahooks'
 import path from 'path-browserify'
+import { useEffect } from 'react'
 
 import FileManager from '@/controllers/file_manager'
 
@@ -33,6 +34,7 @@ export default function FilePreviewModal({
     async () => FileManager.downloadToURL(filePath),
     {
       refreshDeps: [filePath],
+      manual: true,
       refreshDepsAction: () => {
         const ext = path.extname(filePath).toLowerCase()
         if (!filePath || !supportedPreviewExts.includes(ext)) {
@@ -66,6 +68,12 @@ export default function FilePreviewModal({
     )
   }
 
+  useEffect(() => {
+    if (filePath) {
+      run()
+    }
+  }, [])
+
   return (
     <Modal isOpen={isOpen} onClose={onClose} scrollBehavior="inside" size="3xl">
       <ModalContent>
diff --git a/napcat.webui/src/components/file_manage/image_name_button.tsx b/napcat.webui/src/components/file_manage/image_name_button.tsx
index b39a2bb6..cc3e2194 100644
--- a/napcat.webui/src/components/file_manage/image_name_button.tsx
+++ b/napcat.webui/src/components/file_manage/image_name_button.tsx
@@ -33,6 +33,7 @@ export default function ImageNameButton({
     async () => FileManager.downloadToURL(filePath),
     {
       refreshDeps: [filePath],
+      manual: true,
       refreshDepsAction: () => {
         const ext = path.extname(filePath).toLowerCase()
         if (!filePath || !imageExts.includes(ext)) {
@@ -52,6 +53,11 @@ export default function ImageNameButton({
     }
   }, [data, name, onAddPreview])
 
+  useEffect(() => {
+    if (filePath) {
+      run()
+    }
+  }, [])
   return (
     <Button
       variant="light"
diff --git a/src/webui/src/api/File.ts b/src/webui/src/api/File.ts
index 98183f4f..68c60184 100644
--- a/src/webui/src/api/File.ts
+++ b/src/webui/src/api/File.ts
@@ -268,7 +268,11 @@ export const BatchMoveHandler: RequestHandler = async (req, res) => {
 // 新增：文件下载处理方法（注意流式传输，不将整个文件读入内存）
 export const DownloadHandler: RequestHandler = async (req, res) => {
     try {
-        const filePath = normalizePath(req.query['path'] as string);
+        const filePath = normalizePath( req.query[ 'path' ] as string );
+        if (!filePath) {
+            return sendError( res, '参数错误' );
+        }
+        
         const stat = await fsProm.stat(filePath);
 
         res.setHeader('Content-Type', 'application/octet-stream');