dom部分：

 <el-table-column  label="是否异常">
        <template slot-scope="scope">
          <div class="dcs_sf_red" v-if="scope.row.sfyc == 0"></div>
          <div class="dcs_sf_green" v-if="scope.row.sfyc == 1"></div>
        </template>
      </el-table-column>

data部分：

data [
        {
          date: '00:00',
          mode: '固定模式',
          jhz: 120,
          sfyc: 0,
          sjz: 120,
          sfxy: 1,
          fkz: 110,
          cgfs: 1,
        }]

css部分

.dcs_sf_red{
  margin-left: 30%;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background-color: #FE685D;
}
.dcs_sf_green{
  margin-left: 30%;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background-color: #5DFE96;
}