diff --git a/YLErpDAL/Modules/TradeModule/TradeOAService.cs b/YLErpDAL/Modules/TradeModule/TradeOAService.cs
index a6470ab3..0d4a817b 100644
--- a/YLErpDAL/Modules/TradeModule/TradeOAService.cs
+++ b/YLErpDAL/Modules/TradeModule/TradeOAService.cs
@@ -137,11 +137,9 @@ namespace YLErp.Modules.TradeModule
                     using (var form = new MultipartFormDataContent())
                     {
                         // 添加文件
-                        using (var fileStream = new FileStream(filePath, FileMode.Open, FileAccess.Read))
-                        {
-                            var fileName = Path.GetFileName(filePath);
-                            form.Add(new StreamContent(fileStream), "file", fileName);
-                        }
+                        var fileStream = new FileStream(filePath, FileMode.Open, FileAccess.Read);
+                        var fileName = Path.GetFileName(filePath);
+                        form.Add(new StreamContent(fileStream), "file", fileName);
 
                         // 添加systemToken
                         form.Add(new StringContent(systemToken), "systemToken");