diff --git a/dubbo-compatible/src/test/java/org/apache/dubbo/generic/GenericServiceTest.java b/dubbo-compatible/src/test/java/org/apache/dubbo/generic/GenericServiceTest.java
index b2f22390f6d..09d62cc067c 100644
--- a/dubbo-compatible/src/test/java/org/apache/dubbo/generic/GenericServiceTest.java
+++ b/dubbo-compatible/src/test/java/org/apache/dubbo/generic/GenericServiceTest.java
@@ -38,12 +38,11 @@
 import org.junit.jupiter.api.Assertions;
 import org.junit.jupiter.api.Test;
 
+import java.util.ArrayList;
 import java.util.Arrays;
 import java.util.HashMap;
-import java.util.HashSet;
 import java.util.List;
 import java.util.Map;
-import java.util.Set;
 
 public class GenericServiceTest {
 
@@ -108,20 +107,20 @@ public void testGenericComplexCompute4FullServiceMetadata() {
 
         FullServiceDefinition fullServiceDefinition = ServiceDefinitionBuilder.buildFullDefinition(DemoService.class);
         MethodDefinition methodDefinition = getMethod("complexCompute", fullServiceDefinition.getMethods());
-        Map parm2= createComplextObject(fullServiceDefinition,var1, var2, l, var3, var4, testEnum);
-        ComplexObject complexObject = map2bean(parm2);
+        Map mapObject = createComplexObject(fullServiceDefinition,var1, var2, l, var3, var4, testEnum);
+        ComplexObject complexObject = map2bean(mapObject);
 
         Invoker<GenericService> invoker = protocol.refer(GenericService.class, url);
 
 
         GenericService client = proxyFactory.getProxy(invoker, true);
-        Object result = client.$invoke(methodDefinition.getName(), methodDefinition.getParameterTypes(), new Object[]{"haha", parm2});
+        Object result = client.$invoke(methodDefinition.getName(), methodDefinition.getParameterTypes(), new Object[]{"haha", mapObject});
         Assertions.assertEquals("haha###" + complexObject.toString(), result);
 
 
         Invoker<DemoService> invoker2 = protocol.refer(DemoService.class, url);
         GenericService client2 = (GenericService) proxyFactory.getProxy(invoker2, true);
-        Object result2 = client2.$invoke("complexCompute", methodDefinition.getParameterTypes(), new Object[]{"haha2", parm2});
+        Object result2 = client2.$invoke("complexCompute", methodDefinition.getParameterTypes(), new Object[]{"haha2", mapObject});
         Assertions.assertEquals("haha2###" + complexObject.toString(), result2);
 
         invoker.destroy();
@@ -167,7 +166,7 @@ MethodDefinition getMethod(String methodName, List<MethodDefinition> list) {
         return null;
     }
 
-    Map<String, Object> createComplextObject(FullServiceDefinition fullServiceDefinition, String var1, int var2, long l, String[] var3, List<Integer> var4, ComplexObject.TestEnum testEnum) {
+    Map<String, Object> createComplexObject(FullServiceDefinition fullServiceDefinition, String var1, int var2, long l, String[] var3, List<Integer> var4, ComplexObject.TestEnum testEnum) {
         List<TypeDefinition> typeDefinitions = fullServiceDefinition.getTypes();
         TypeDefinition topTypeDefinition = null;
         TypeDefinition innerTypeDefinition = null;
@@ -191,7 +190,7 @@ Map<String, Object> createComplextObject(FullServiceDefinition fullServiceDefini
         Assertions.assertEquals(topTypeDefinition.getProperties().get("strArrays").getType(), "java.lang.String[]");
         Assertions.assertEquals(topTypeDefinition.getProperties().get("innerObject3").getType(), "org.apache.dubbo.service.ComplexObject.InnerObject3[]");
         Assertions.assertEquals(topTypeDefinition.getProperties().get("testEnum").getType(), "org.apache.dubbo.service.ComplexObject.TestEnum");
-        Assertions.assertEquals(topTypeDefinition.getProperties().get("innerObject2").getType(), "java.util.Set<org.apache.dubbo.service.ComplexObject$InnerObject2>");
+        Assertions.assertEquals(topTypeDefinition.getProperties().get("innerObject2").getType(), "java.util.List<org.apache.dubbo.service.ComplexObject$InnerObject2>");
 
         Assertions.assertSame(innerTypeDefinition.getProperties().get("innerA").getType(), "java.lang.String");
         Assertions.assertSame(innerTypeDefinition.getProperties().get("innerB").getType(), "int");
@@ -216,16 +215,16 @@ Map<String, Object> createComplextObject(FullServiceDefinition fullServiceDefini
         innerObjectMap.put("innerA", var1);
         innerObjectMap.put("innerB", var2);
 
-        Set<Map> innerObject2Set = new HashSet<>(4);
-        result.put("innerObject2", innerObject2Set);
+        List<Map> innerObject2List = new ArrayList<>();
+        result.put("innerObject2", innerObject2List);
         Map innerObject2Tmp1 = new HashMap<>(4);
         innerObject2Tmp1.put("innerA2", var1 + "_21");
         innerObject2Tmp1.put("innerB2", var2 + 100000);
         Map innerObject2Tmp2 = new HashMap<>(4);
         innerObject2Tmp2.put("innerA2", var1 + "_22");
         innerObject2Tmp2.put("innerB2", var2 + 200000);
-        innerObject2Set.add(innerObject2Tmp1);
-        innerObject2Set.add(innerObject2Tmp2);
+        innerObject2List.add(innerObject2Tmp1);
+        innerObject2List.add(innerObject2Tmp2);
 
         Map innerObject3Tmp1 = new HashMap<>(4);
         innerObject3Tmp1.put("innerA3", var1 + "_31");
diff --git a/dubbo-compatible/src/test/java/org/apache/dubbo/service/ComplexObject.java b/dubbo-compatible/src/test/java/org/apache/dubbo/service/ComplexObject.java
index 5c895380302..3657a03a289 100644
--- a/dubbo-compatible/src/test/java/org/apache/dubbo/service/ComplexObject.java
+++ b/dubbo-compatible/src/test/java/org/apache/dubbo/service/ComplexObject.java
@@ -16,13 +16,12 @@
  */
 package org.apache.dubbo.service;
 
+import java.util.ArrayList;
 import java.util.Arrays;
 import java.util.HashMap;
-import java.util.HashSet;
 import java.util.List;
 import java.util.Map;
 import java.util.Objects;
-import java.util.Set;
 
 /**
  * ON 2018/11/5
@@ -46,7 +45,7 @@ public ComplexObject(String var1, int var2, long l, String[] var3, List<Integer>
         InnerObject2 io22 = new InnerObject2();
         io22.setInnerA2(var1 + "_22");
         io22.setInnerB2(var2 + 200000);
-        this.setInnerObject2(new HashSet<InnerObject2>(Arrays.asList(io21, io22)));
+        this.setInnerObject2(new ArrayList<>(Arrays.asList(io21, io22)));
 
         InnerObject3 io31 = new InnerObject3();
         io31.setInnerA3(var1 + "_31");
@@ -61,7 +60,7 @@ public ComplexObject(String var1, int var2, long l, String[] var3, List<Integer>
     }
 
     private InnerObject innerObject;
-    private Set<InnerObject2> innerObject2;
+    private List<InnerObject2> innerObject2;
     private InnerObject3[] innerObject3;
     private String[] strArrays;
     private List<Integer> intList;
@@ -109,11 +108,11 @@ public void setTestEnum(TestEnum testEnum) {
         this.testEnum = testEnum;
     }
 
-    public Set<InnerObject2> getInnerObject2() {
+    public List<InnerObject2> getInnerObject2() {
         return innerObject2;
     }
 
-    public void setInnerObject2(Set<InnerObject2> innerObject2) {
+    public void setInnerObject2(List<InnerObject2> innerObject2) {
         this.innerObject2 = innerObject2;
     }
 
@@ -225,7 +224,7 @@ public String getInnerA2() {
             return innerA2;
         }
 
-        public void setInnerA2(String innerA) {
+        public void setInnerA2(String innerA2) {
             this.innerA2 = innerA2;
         }
 
@@ -233,7 +232,7 @@ public int getInnerB2() {
             return innerB2;
         }
 
-        public void setInnerB2(int innerB) {
+        public void setInnerB2(int innerB2) {
             this.innerB2 = innerB2;
         }
 
diff --git a/dubbo-metadata-report/dubbo-metadata-definition/src/test/java/org/apache/dubbo/metadata/definition/service/ComplexObject.java b/dubbo-metadata-report/dubbo-metadata-definition/src/test/java/org/apache/dubbo/metadata/definition/service/ComplexObject.java
index 60a467a75b2..2859a13be8c 100644
--- a/dubbo-metadata-report/dubbo-metadata-definition/src/test/java/org/apache/dubbo/metadata/definition/service/ComplexObject.java
+++ b/dubbo-metadata-report/dubbo-metadata-definition/src/test/java/org/apache/dubbo/metadata/definition/service/ComplexObject.java
@@ -225,7 +225,7 @@ public String getInnerA2() {
             return innerA2;
         }
 
-        public void setInnerA2(String innerA) {
+        public void setInnerA2(String innerA2) {
             this.innerA2 = innerA2;
         }
 
@@ -233,7 +233,7 @@ public int getInnerB2() {
             return innerB2;
         }
 
-        public void setInnerB2(int innerB) {
+        public void setInnerB2(int innerB2) {
             this.innerB2 = innerB2;
         }