diff --git a/packages/vchart-extension/__tests__/runtime/browser/test-page/ranking-list-2.ts b/packages/vchart-extension/__tests__/runtime/browser/test-page/ranking-list-2.ts
index 0ab9b79e3..ee0827146 100644
--- a/packages/vchart-extension/__tests__/runtime/browser/test-page/ranking-list-2.ts
+++ b/packages/vchart-extension/__tests__/runtime/browser/test-page/ranking-list-2.ts
@@ -1,7 +1,5 @@
 import { registerRankingList } from '../../../../src';
 import { VChart } from '@visactor/vchart';
-import { defaultSpec } from '../../../../src/charts/ranking-list/constant';
-import { merge } from '@visactor/vutils';
 import { GUI } from 'lil-gui';
 
 const guiObject = {
@@ -196,7 +194,7 @@ const spec = {
 
 const run = () => {
   registerRankingList();
-  const cs = new VChart(merge(defaultSpec, spec), {
+  const cs = new VChart(spec, {
     dom: document.getElementById('chart') as HTMLElement,
     //theme: 'dark',
     onError: err => {
diff --git a/packages/vchart-extension/__tests__/runtime/browser/test-page/ranking-list-3.ts b/packages/vchart-extension/__tests__/runtime/browser/test-page/ranking-list-3.ts
index 85d432543..939e24d71 100644
--- a/packages/vchart-extension/__tests__/runtime/browser/test-page/ranking-list-3.ts
+++ b/packages/vchart-extension/__tests__/runtime/browser/test-page/ranking-list-3.ts
@@ -1,7 +1,5 @@
 import { registerRankingList } from '../../../../src';
 import { VChart } from '@visactor/vchart';
-import { defaultSpec } from '../../../../src/charts/ranking-list/constant';
-import { merge } from '@visactor/vutils';
 import { GUI } from 'lil-gui';
 
 const guiObject = {
@@ -245,7 +243,7 @@ const spec = {
 
 const run = () => {
   registerRankingList();
-  const cs = new VChart(merge(defaultSpec, spec), {
+  const cs = new VChart(spec, {
     dom: document.getElementById('chart') as HTMLElement,
     //theme: 'dark',
     onError: err => {
diff --git a/packages/vchart-extension/__tests__/runtime/browser/test-page/ranking-list.ts b/packages/vchart-extension/__tests__/runtime/browser/test-page/ranking-list.ts
index 2bcd2154d..cadcc4a33 100644
--- a/packages/vchart-extension/__tests__/runtime/browser/test-page/ranking-list.ts
+++ b/packages/vchart-extension/__tests__/runtime/browser/test-page/ranking-list.ts
@@ -1,7 +1,5 @@
 import { registerRankingList } from '../../../../src';
 import { VChart } from '@visactor/vchart';
-import { defaultSpec } from '../../../../src/charts/ranking-list/constant';
-import { merge } from '@visactor/vutils';
 import { GUI } from 'lil-gui';
 
 const guiObject = {
@@ -176,7 +174,7 @@ const spec = {
 
 const run = () => {
   registerRankingList();
-  const cs = new VChart(merge(defaultSpec, spec), {
+  const cs = new VChart(spec, {
     dom: document.getElementById('chart') as HTMLElement,
     //theme: 'dark',
     onError: err => {
diff --git a/packages/vchart-extension/src/charts/ranking-list/utils.ts b/packages/vchart-extension/src/charts/ranking-list/utils.ts
index ddbe55f9c..94a417b44 100644
--- a/packages/vchart-extension/src/charts/ranking-list/utils.ts
+++ b/packages/vchart-extension/src/charts/ranking-list/utils.ts
@@ -1,6 +1,6 @@
 import { Datum } from '@visactor/vchart/src/typings';
 
-export const applyVisible = (spec, keyList: string[]) => {
+export const applyVisible = (spec: any, keyList: string[]) => {
   keyList.forEach(key => {
     spec[key] = {
       ...spec[key],
@@ -12,15 +12,15 @@ export const applyVisible = (spec, keyList: string[]) => {
   });
 };
 
-export const mergeObjects = (objA, objB) => {
-  function recursiveMerge(target, source) {
+export const mergeObjects = (objA: any, objB: any) => {
+  function recursiveMerge(target: any, source: any) {
     for (const key in source) {
       if (typeof source[key] === 'object' && source[key] !== null) {
-        if (!target[key]) {
+        if (!target.hasOwnProperty(key)) {
           target[key] = Array.isArray(source[key]) ? [] : {};
         }
         recursiveMerge(target[key], source[key]);
-      } else if (!target.hasOwnProperty(key)) {
+      } else if (!target.hasOwnProperty(key) && typeof target === 'object') {
         target[key] = source[key];
       }
     }