在change事件中添加this.$forceUpdate()方法强制更新值

<el-radio-group v-model="form.enable" @change="enableChange">
    <el-radio :label="0">启用</el-radio>
    <el-radio :label="1">关闭</el-radio>
</el-radio-group>

enableChange(){
     this.$forceUpdate()
},