diff --git a/__test__/time-panel.test.js b/__test__/time-panel.test.js
index f109964f..4a1a2c0b 100644
--- a/__test__/time-panel.test.js
+++ b/__test__/time-panel.test.js
@@ -1,5 +1,6 @@
 import { mount } from '@vue/test-utils';
 import TimePanel from '../src/time/time-panel';
+import ListColumns from '../src/time/list-columns.vue';
 
 let wrapper;
 
@@ -96,4 +97,17 @@ describe('TimePanel', () => {
     hour.trigger('click');
     expect(wrapper.emitted().select).toBeUndefined();
   });
+
+  it('fix: when the custom format pass into time panel', () => {
+    wrapper = mount(TimePanel, {
+      propsData: {
+        value: new Date(),
+        format: {},
+      },
+    });
+    const cols = wrapper.find(ListColumns);
+    expect(cols.props('showHour')).toBe(true);
+    expect(cols.props('showMinute')).toBe(true);
+    expect(cols.props('showSecond')).toBe(true);
+  });
 });
diff --git a/src/time/time-panel.vue b/src/time/time-panel.vue
index dea84597..5cf297c4 100644
--- a/src/time/time-panel.vue
+++ b/src/time/time-panel.vue
@@ -11,7 +11,7 @@
         :date="innerValue"
         :get-classes="getClasses"
         :options="timePickerOptions"
-        :format="format"
+        :format="innerForamt"
         @select="handleSelect"
       ></list-options>
       <list-columns
@@ -53,7 +53,6 @@ export default {
       },
     },
     format: {
-      type: String,
       default: 'HH:mm:ss',
     },
     timeTitleFormat: {
@@ -115,8 +114,11 @@ export default {
       const date = new Date(this.innerValue);
       return this.formatDate(date, titleFormat);
     },
+    innerForamt() {
+      return typeof this.format === 'string' ? this.format : 'HH:mm:ss';
+    },
     ShowHourMinuteSecondAMPM() {
-      const { format } = this;
+      const format = this.innerForamt;
       const defaultProps = {
         showHour: /[HhKk]/.test(format),
         showMinute: /m/.test(format),