<el-select v-model="scope.row.payChannel" placeholder="请选择支付方式" @change="() => {payChange(scope.row);}"><el-option v-for="(item, index) in options" :key="index" :label="item.label":value="item.value" :disabled="isSelect(item.value)" />
</el-select>

const isSelect = (val: any) => {return tableData.value.some((item: any) => item.payChannel === val);
};