diff --git a/Learun.Framework.Ultimate V7/Learun.Application.Web/Areas/LR_SystemModule/Views/Annexes/UploadForm.js b/Learun.Framework.Ultimate V7/Learun.Application.Web/Areas/LR_SystemModule/Views/Annexes/UploadForm.js
index 3d99ae114..f3ceb3320 100644
--- a/Learun.Framework.Ultimate V7/Learun.Application.Web/Areas/LR_SystemModule/Views/Annexes/UploadForm.js	
+++ b/Learun.Framework.Ultimate V7/Learun.Application.Web/Areas/LR_SystemModule/Views/Annexes/UploadForm.js	
@@ -134,7 +134,8 @@ var bootstrap = function ($, learun) {
                 chunked: true,
                 chunkRetry: 3,
                 prepareNextFile: true,
-                chunkSize:'1048576',
+                chunkSize: '1048576',
+                fileSingleSizeLimit:500*1024*1024,
                 // 上传参数
                 formData: {
                     __RequestVerificationToken: $.lrToken