<template>
 <p
 @click.stop="handleClick"
 v-show="node.visible">
 <p class="chu-tree-nodecontent"
 :style="{ 'padding-left': (node.level - 1) * tree.indent + 'px' }">
 <span :class="arrowClasses" @click.stop="handleExpandIconClick">
 <Icon v-if="!node.isLeaf" type="arrow-right-b"></Icon>
 </span>
 <Checkbox
 v-if="showCheckbox"
 :value="node.checked"
 :indeterminate="node.indeterminate"
 :disabled="!!node.disabled"
 @click.native.stop
 @on-change="handleCheckChange"></Checkbox>
 <span
 v-if="node.loading"
 class="ivu-load-loop">
 </span>
 <node-content :node="node"></node-content>
 </p>
 <collapse-transition>
 <p
 v-show="expanded">
 <el-tree-node
 :render-content="renderContent"
 v-for="child in node.childNodes"
 :key="getNodeKey(child)"
 :node="child"
 @node-expand="handleChildNodeExpand">
 </el-tree-node>
 </p>
 </collapse-transition>
 </p>
</template>

handleCheckChange(ev) {
 this.node.setChecked(ev, !this.tree.checkStrictly);
 },

npm i chu-tree-iview

import chuView from 'chu-tree-iview'
Vue.use(chuView)
<chu-tree></chu-tree>