diff --git a/mybatis-flex-core/src/main/java/com/mybatisflex/core/util/FieldWrapper.java b/mybatis-flex-core/src/main/java/com/mybatisflex/core/util/FieldWrapper.java
index ad7d3b6b..4438df55 100644
--- a/mybatis-flex-core/src/main/java/com/mybatisflex/core/util/FieldWrapper.java
+++ b/mybatis-flex-core/src/main/java/com/mybatisflex/core/util/FieldWrapper.java
@@ -105,7 +105,12 @@ public class FieldWrapper {
             Type genericType = field.getGenericType();
             if (genericType instanceof ParameterizedType) {
                 fieldWrapper.keyType = (Class<?>) ((ParameterizedType) genericType).getActualTypeArguments()[0];
-                fieldWrapper.mappingType = (Class<?>) ((ParameterizedType) genericType).getActualTypeArguments()[1];
+                Type actualTypeArgument = ((ParameterizedType) genericType).getActualTypeArguments()[1];
+                if (actualTypeArgument instanceof ParameterizedType) {
+                    fieldWrapper.mappingType = (Class<?>) ((ParameterizedType) actualTypeArgument).getRawType();
+                } else {
+                    fieldWrapper.mappingType = (Class<?>) actualTypeArgument;
+                }
             }
         } else {
             fieldWrapper.mappingType = fieldType;
diff --git a/mybatis-flex-core/src/test/java/com/mybatisflex/coretest/FieldWrapperTest.java b/mybatis-flex-core/src/test/java/com/mybatisflex/coretest/FieldWrapperTest.java
new file mode 100644
index 00000000..427929f7
--- /dev/null
+++ b/mybatis-flex-core/src/test/java/com/mybatisflex/coretest/FieldWrapperTest.java
@@ -0,0 +1,63 @@
+
+
+package com.mybatisflex.coretest;
+
+import com.mybatisflex.core.util.FieldWrapper;
+import org.junit.Test;
+
+import java.util.ArrayList;
+import java.util.HashMap;
+import java.util.List;
+import java.util.Map;
+
+/**
+ * @author tangxin
+ * @since 2023-12-06
+ */
+public class FieldWrapperTest {
+    public static class Demo  {
+        private Map<String,Object> map1;
+        private Map<String, List<Long>> map2 ;
+
+        public Map<String, Object> getMap1() {
+            return map1;
+        }
+
+        public void setMap1(Map<String, Object> map1) {
+            this.map1 = map1;
+        }
+
+        public Map<String, List<Long>> getMap2() {
+            return map2;
+        }
+
+        public void setMap2(Map<String, List<Long>> map2) {
+            this.map2 = map2;
+        }
+
+    }
+    @Test
+    public void test01() {
+        try {
+            Map<String, List<Long>> listMap = new HashMap<>(0);
+            List<Long> list = new ArrayList<>();
+            list.add(1L);
+            list.add(2L);
+            listMap.put("1", list);
+            Demo demo = new Demo();
+            FieldWrapper fieldWrapper1 = FieldWrapper.of(demo.getClass(), "map1");
+            FieldWrapper fieldWrapper2 = FieldWrapper.of(demo.getClass(), "map2");
+            fieldWrapper1.set(listMap, demo);
+            fieldWrapper2.set(listMap, demo);
+            Map<String, Object> map1 = (Map<String, Object>) fieldWrapper1.get(demo);
+            Map<String, List<Long>> map2 = (Map<String, List<Long>>) fieldWrapper1.get(demo);
+            System.out.println(map1.get("1"));
+            System.out.println(map2.get("1").get(0));
+        }catch (Exception e){
+            assert false;
+        }
+    }
+
+
+
+}