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当修改input框内的值（form.name）的时候，watch 监控from失败，watch中的from不相应，打印无效；解决方法：可以用@change；数据变化时触发“nameChange”事件； <el-form ref="form" :model="form" label-width="80px"> <el-form-item label="活动名称"> <el-input v-model="form.name" @change="nameChange"></el-input> </el-form-item> <el-form-item label="活动区域"> <el-select v-model="form.region" placeholder="请选择活动区域"> <el-option label="区域一" value="shanghai"></el-option> <el-option label="区域二" value="beijing"></el-option> </el-select> </el-form-item> <el-form-item label="活动时间"> <el-col :span="11"> <el-date-picker type="date" placeholder="选择日期" v-model="form.date1" style="width: 100%;"></el-date-picker> </el-col> <el-col class="line" :span="2">-</el-col> <el-col :span="11"> <el-time-picker placeholder="选择时间" v-model="form.date2" style="width: 100%;"></el-time-picker> </el-col> </el-form-item> <el-form-item label="即时配送"> <el-switch v-model="form.delivery"></el-switch> </el-form-item> <el-form-item label="活动性质"> <el-checkbox-group v-model="form.type"> <el-checkbox label="美食/餐厅线上活动" name="type"></el-checkbox> <el-checkbox label="地推活动" name="type"></el-checkbox> <el-checkbox label="线下主题活动" name="type"></el-checkbox> <el-checkbox label="单纯品牌曝光" name="type"></el-checkbox> </el-checkbox-group> </el-form-item> <el-form-item label="特殊资源"> <el-radio-group v-model="form.resource"> <el-radio label="线上品牌商赞助"></el-radio> <el-radio label="线下场地免费"></el-radio> </el-radio-group> </el-form-item> <el-form-item label="活动形式"> <el-input type="textarea" v-model="form.desc"></el-input> </el-form-item> <el-form-item> <el-button type="primary" @click="onSubmit">立即创建</el-button> <el-button>取消</el-button> </el-form-item> </el-form> <script> export default { data() { return { form: { name: '', region: '', date1: '', date2: '', delivery: false, type: [], resource: '', desc: '' } } }, methods: { onSubmit() { console.log('submit!'); }, nameChange() { console.log(this.from.name); // 可获取from表单当中的name值 } }, watch : { from(val, oldVal) { console.log(val); // 无效 } } } </script>