diff --git a/orm/src/main/java/com/zfoo/orm/manager/OrmManager.java b/orm/src/main/java/com/zfoo/orm/manager/OrmManager.java
index 249aaf25..09b5347d 100644
--- a/orm/src/main/java/com/zfoo/orm/manager/OrmManager.java
+++ b/orm/src/main/java/com/zfoo/orm/manager/OrmManager.java
@@ -512,7 +512,7 @@ public class OrmManager implements IOrmManager {
                 var valueType = types[1];
 
                 if (!String.class.isAssignableFrom((Class<?>) keyType)) {
-                    throw new RunException("ORM中Map的key必须是String类型");
+                    throw new RunException("ORM[class:{}]类型声明不正确，Map的key类型必须为String类型", clazz.getCanonicalName());
                 }
 
                 checkSubEntity(clazz, valueType);
diff --git a/orm/src/test/java/com/zfoo/orm/accessor/MapTest.java b/orm/src/test/java/com/zfoo/orm/accessor/MapTest.java
index 29feff1b..19d61541 100644
--- a/orm/src/test/java/com/zfoo/orm/accessor/MapTest.java
+++ b/orm/src/test/java/com/zfoo/orm/accessor/MapTest.java
@@ -25,6 +25,7 @@ import org.slf4j.LoggerFactory;
 import org.springframework.context.support.ClassPathXmlApplicationContext;
 
 import java.util.HashMap;
+import java.util.Map;
 
 @Ignore
 public class MapTest {
@@ -55,6 +56,10 @@ public class MapTest {
         bagMap.put("bag2", bagItem2);
         bagMap.put("bag3", bagItem3);
 
+        var map = new HashMap<String, Map<String, String>>();
+        map.put("a", Map.of("b", "b"));
+        entity.setBaseMap(map);
+
         OrmContext.getAccessor().insert(entity);
 
         var myEntity = OrmContext.getAccessor().load(1, MapEntity.class);
diff --git a/orm/src/test/java/com/zfoo/orm/entity/bag/MapEntity.java b/orm/src/test/java/com/zfoo/orm/entity/bag/MapEntity.java
index 44db31fc..c08f4fe2 100644
--- a/orm/src/test/java/com/zfoo/orm/entity/bag/MapEntity.java
+++ b/orm/src/test/java/com/zfoo/orm/entity/bag/MapEntity.java
@@ -29,6 +29,8 @@ public class MapEntity implements IEntity<Long> {
 
     private Map<String, BagItem> bagMap = new HashMap<>();
 
+    private Map<String, Map<String, String>> baseMap = new HashMap<>();
+
     @Override
     public Long id() {
         return id;
@@ -50,6 +52,13 @@ public class MapEntity implements IEntity<Long> {
         this.bagMap = bagMap;
     }
 
+    public Map<String, Map<String, String>> getBaseMap() {
+        return baseMap;
+    }
+
+    public void setBaseMap(Map<String, Map<String, String>> baseMap) {
+        this.baseMap = baseMap;
+    }
 
     @Override
     public boolean equals(Object o) {