diff --git a/emis-biz/src/main/java/com/xdadan/erp/emis/service/impl/EmisWaybillServiceImpl.java b/emis-biz/src/main/java/com/xdadan/erp/emis/service/impl/EmisWaybillServiceImpl.java
index 4b6b25fc6..26fdad5d4 100644
--- a/emis-biz/src/main/java/com/xdadan/erp/emis/service/impl/EmisWaybillServiceImpl.java
+++ b/emis-biz/src/main/java/com/xdadan/erp/emis/service/impl/EmisWaybillServiceImpl.java
@@ -328,7 +328,21 @@ public class EmisWaybillServiceImpl extends EmisBaseService implements IEmisWayb
             throw new EmisBizError(EmisBizErrorType.NOT_EXISTS,"运单不存在");
         }
 
-        return cvtEmisWaybillToWaybillOrder(dbEmisWaybill);
+        WaybillOrder waybillOrder=cvtEmisWaybillToWaybillOrder(dbEmisWaybill);
+
+        // 判断单号如果是子单则提示不允许修改
+        boolean isSubBill=false;
+        String mainBillCode=getMainBillCode(billCode);
+        if(!billCode.equals(mainBillCode) ){
+            isSubBill = true;
+        }
+
+        if(isSubBill){
+            waybillOrder.setLockFlag("T");
+            waybillOrder.setLockReason("不允许修改子单");
+        }
+
+        return waybillOrder;
 
     }