diff --git a/src/main/app.ts b/src/main/app.ts
index e2e5356a..9baea84b 100644
--- a/src/main/app.ts
+++ b/src/main/app.ts
@@ -285,7 +285,7 @@ if (!gotTheLock) {
             {
               type: 'radio',
               checked: urlMode === 'scheme',
-              label: '正式端口（Schema）',
+              label: '正式端口（Scheme）',
               click: () => {
                 urlMode = 'scheme'
                 reload()
diff --git a/src/main/server/file.ts b/src/main/server/file.ts
index a0cc3f43..4116c334 100644
--- a/src/main/server/file.ts
+++ b/src/main/server/file.ts
@@ -88,9 +88,9 @@ const checkHash = (repo: string, p: string, oldHash: string) => {
   return oldHash === hash(repo, p)
 }
 
-const upload = (repo: string, file: any, path: string) => {
+const upload = (repo: string, buffer: Buffer, path: string) => {
   if (readonly) throw new Error('只读模式')
-  write(repo, path, fs.readFileSync(file.path))
+  write(repo, path, buffer)
 }
 
 const travels = (location: string, repo: string, basePath: string, markedFiles: MarkedFile[] | null = null): any => {
diff --git a/src/main/server/index.ts b/src/main/server/index.ts
index e410c1f8..9d7a3032 100644
--- a/src/main/server/index.ts
+++ b/src/main/server/index.ts
@@ -63,7 +63,9 @@ const attachment = async (ctx: any, next: any) => {
     if (ctx.method === 'POST') {
       const path = ctx.request.body.path
       const repo = ctx.request.body.repo
-      file.upload(repo, ctx.request.files.attachment, path)
+      const attachment = ctx.request.body.attachment
+      const buffer = Buffer.from(attachment.substring(attachment.indexOf(',') + 1), 'base64')
+      file.upload(repo, buffer, path)
       ctx.body = result('ok', '上传成功', path)
     } else if (ctx.method === 'GET') {
       ctx.type = mime.getType(ctx.query.path)
@@ -251,7 +253,10 @@ const server = (port = 3000) => {
     multipart: true,
     formLimit: '20mb',
     jsonLimit: '20mb',
-    textLimit: '20mb'
+    textLimit: '20mb',
+    formidable: {
+      maxFieldsSize: 268435456
+    }
   }))
 
   app.use(async (ctx: any, next: any) => await wrapper(ctx, next, fileContent))
diff --git a/src/renderer/useful/file.ts b/src/renderer/useful/file.ts
index 5d592656..8583487f 100644
--- a/src/renderer/useful/file.ts
+++ b/src/renderer/useful/file.ts
@@ -137,7 +137,7 @@ const search = async (repo: string, text: string) => {
 const upload = async (repo: string, belongPath: string, uploadFile: any, name: string | null = null): Promise<{repo: string; path: string; relativePath: string}> => {
   return new Promise((resolve, reject) => {
     const fr = new FileReader()
-    fr.readAsBinaryString(uploadFile)
+    fr.readAsDataURL(uploadFile)
     fr.onloadend = async () => {
       try {
         const filename = name || Crypto.binMd5(fr.result).substr(0, 8) + extname(uploadFile.name)
@@ -152,7 +152,7 @@ const upload = async (repo: string, belongPath: string, uploadFile: any, name: s
         )
         formData.append('repo', repo)
         formData.append('path', path)
-        formData.append('attachment', uploadFile)
+        formData.append('attachment', fr.result as string)
 
         await fetchHttp('/api/attachment', { method: 'POST', body: formData })