diff --git a/business/jxstore/knowledge/knowledge.go b/business/jxstore/knowledge/knowledge.go
index d5abfbc39..239779632 100644
--- a/business/jxstore/knowledge/knowledge.go
+++ b/business/jxstore/knowledge/knowledge.go
@@ -49,7 +49,7 @@ func SNSUploadImg(ctx *jxcontext.Context, files []*multipart.FileHeader, isThumb
 	snsUploadImgResult = &SNSUploadImgResult{}
 	file, err := fileHeader.Open()
 	file.Read(data)
-	file.Close()
+	defer file.Close()
 	if len(data) == 0 {
 		return snsUploadImgResult, fmt.Errorf("未读取到文件！")
 	}