diff --git a/src/main/java/com/glxp/api/idc/service/impl/IdcServiceImpl.java b/src/main/java/com/glxp/api/idc/service/impl/IdcServiceImpl.java
index 3fcfd7377..99f855a36 100644
--- a/src/main/java/com/glxp/api/idc/service/impl/IdcServiceImpl.java
+++ b/src/main/java/com/glxp/api/idc/service/impl/IdcServiceImpl.java
@@ -362,7 +362,7 @@ public class IdcServiceImpl implements IdcService {
 		/*******/
 		JSONObject json = JSONObject.parseObject(content);
 		String filePathSlash = filePath.substring(filePath.length() -1).equals("/") ? "" : "/";
-		String backFileSlash = backFilePath.substring(filePath.length() -1).equals("/") ? "" : "/";
+		String backFileSlash = backFilePath.substring(backFilePath.length() -1).equals("/") ? "" : "/";
 		String datePath = DateUtil.formatDate(new Date(),"yyyy-MM-dd");
 		String fileName =filePath +filePathSlash +datePath+"/"+json.getString("messageType")+"-"+json.getString("messageId")+".udi";
 		String backFileName = backFilePath  +backFileSlash +datePath+"/"+json.getString("messageType")+"-"+json.getString("messageId")+".udi";