my component combines with vue-i18n. I try to add like this:

import Vue from 'vue' import VueI18n from 'vue-i18n'

Vue.use(VueI18n)

but it still can't work in storybook. How to use it ?

If you use Vue CLI plugin for storybook you can modify the config/storybook/config.js as follows

import { addDecorator } from '@storybook/vue';
import i18n from '@/plugins/i18n';

addDecorator(() => ({
  template: '<story/>',
  i18n,
}));