diff --git a/src/main/java/com/cm/systemcity/service/grid/impl/GridServiceImpl.java b/src/main/java/com/cm/systemcity/service/grid/impl/GridServiceImpl.java
index 7acbb8a..5f1f146 100644
--- a/src/main/java/com/cm/systemcity/service/grid/impl/GridServiceImpl.java
+++ b/src/main/java/com/cm/systemcity/service/grid/impl/GridServiceImpl.java
@@ -597,7 +597,7 @@ public class GridServiceImpl extends BaseService implements IGridService {
             return areaCode + String.format("%03d", Integer.parseInt(areaLastPO.getGridCode().substring(areaLastPO.getGridCode().length() - 4)) + 1);
         }
         // 网格编码存在不更改
-        return areaCode + String.format("%03d", Integer.parseInt(gridCode.substring(gridCode.length() - 4)));
+        return areaCode + String.format("%03d", Integer.parseInt(gridCode.substring(gridCode.length() - 3)));
     }
 
 }