效果图如下：

代码：

<!--日历-->
<el-calendar v-model="value" style="height:620px" class="el_cal_out">
    <template slot="dateCell" slot-scope="{ data}">
        <p style="margin:0px">
              {{ data.day.split('-').slice(2).join() }}<br />
              <!--标记-->
         <div v-for="(i, index) in dayTime" :key="index">
            <div v-if="data.day==i" class="budge"></div>
        </div>
       </p>
    </template>
</el-calendar>
       <script>
        export default {
			 data () {
				dayTime: ["2021-03-28", "2021-01-26", "2021-03-16"]	
 			}
}
</script>
<style scoped>
.budge {
  width: 8px;
  height: 8px;
  background: #e6a23c;
  border-radius: 50%;
  margin: 0 auto;
  margin-top: 10px;
}
</style >

**
**