diff --git a/extend/base/Uploader.php b/extend/base/Uploader.php
index 5ecf0f788..0c9a4d942 100755
--- a/extend/base/Uploader.php
+++ b/extend/base/Uploader.php
@@ -107,6 +107,12 @@ class Uploader
      */
     private function uploadFile()
     {
+        if(empty($_FILES[$this->fileField]))
+        {
+            $this->stateInfo = $this->getStateInfo("ERROR_SIZE_EXCEED");
+            return;
+        }
+        
         $file = $this->file = $_FILES[$this->fileField];
         if (!$file) {
             $this->stateInfo = $this->getStateInfo("ERROR_FILE_NOT_FOUND");
diff --git a/public/static/common/lib/ueditor/dialogs/attachment/attachment.js b/public/static/common/lib/ueditor/dialogs/attachment/attachment.js
index 966d5ad73..7f8c3e951 100755
--- a/public/static/common/lib/ueditor/dialogs/attachment/attachment.js
+++ b/public/static/common/lib/ueditor/dialogs/attachment/attachment.js
@@ -176,7 +176,8 @@
                 fileVal: editor.getOpt('fileFieldName'),
                 duplicate: true,
                 fileSingleSizeLimit: fileMaxSize,
-                compress: false
+                compress: false,
+                threads: 1
             });
             uploader.addButton({
                 id: '#filePickerBlock'
diff --git a/public/static/common/lib/ueditor/dialogs/image/image.js b/public/static/common/lib/ueditor/dialogs/image/image.js
index ee67cbfbe..3af42fd4c 100755
--- a/public/static/common/lib/ueditor/dialogs/image/image.js
+++ b/public/static/common/lib/ueditor/dialogs/image/image.js
@@ -348,6 +348,7 @@
                 server: actionUrl,
                 fileVal: editor.getOpt('imageFieldName'),
                 duplicate: true,
+                threads: 1,
                 fileSingleSizeLimit: imageMaxSize,    // 默认 2 M
                 compress: editor.getOpt('imageCompressEnable') ? {
                     width: imageCompressBorder,
diff --git a/public/static/common/lib/ueditor/dialogs/video/video.js b/public/static/common/lib/ueditor/dialogs/video/video.js
index a96a2f0b3..030fc54e2 100755
--- a/public/static/common/lib/ueditor/dialogs/video/video.js
+++ b/public/static/common/lib/ueditor/dialogs/video/video.js
@@ -625,7 +625,8 @@
                 fileVal: editor.getOpt('videoFieldName'),
                 duplicate: true,
                 fileSingleSizeLimit: fileMaxSize,
-                compress: false
+                compress: false,
+                threads: 1
             });
             uploader.addButton({
                 id: '#filePickerBlock'