diff --git a/src/main/java/com/candy/db2map/service/impl/MapServiceImpl.java b/src/main/java/com/candy/db2map/service/impl/MapServiceImpl.java
index acae7213241a3dfd645ddf5bf86b66ea5731dc33..47838421662b1476f4156d854c44441f40bb90cd 100644
--- a/src/main/java/com/candy/db2map/service/impl/MapServiceImpl.java
+++ b/src/main/java/com/candy/db2map/service/impl/MapServiceImpl.java
@@ -70,7 +70,7 @@ public class MapServiceImpl implements IMapService {
         {
             throw new MapException("保存内容为空");
         }
-        if(linkedHashMap.containsKey(db2MapService.getFieldIdName()))
+        if(!linkedHashMap.containsKey(db2MapService.getFieldIdName()))
         {
             throw new MapException("ID获取失败");
         }