必须套一层 

const ruleForm = ref({
  list: [
    { name: '' }
  ]
})

<el-form-item label="名称" :prop="`list[${index}].name`" :rules="rules.name">
  <el-input v-model="item.name" maxlength="30" />
</el-form-item>

<el-formref="ruleFormRef":model="ruleForm":rules="rules"label-width="110px"
><div v-for="(item, index) in ruleForm.list" :key="index"><el-form-item label="名称" :prop="`list[${index}].name`" :rules="rules.name"><el-input v-model="item.name" maxlength="30" /></el-form-item><el-form-item label-width="0"><div class="dis-flex justify-center w100"><div class="save-btn" @click="submitForm(ruleFormRef)">保存</div><div class="cancel-btn" @click="resetForm(ruleFormRef)">取消</div></div></el-form-item></div>
</el-form>const ruleFormRef = ref()
const ruleForm = ref({list: [{ name: '' }]
})
const rules = reactive({name: [{ required: true, message: '请输入名称', trigger: 'blur' }]
})const submitForm = async(formEl) => {if (!formEl) returnawait formEl.validate((valid, fields) => {if (valid) {console.log('submit!', ruleForm.value)} else {console.log('error submit!', fields)}})
}
const resetForm = (formEl) => {ruleForm.value = defaultForm.valueif (!formEl) returnformEl.resetFields()
}