diff --git a/README.md b/README.md
index e8cc4f0..f21f9ab 100644
--- a/README.md
+++ b/README.md
@@ -1,10 +1,12 @@
 ## TODO
 
 - 解决提取成功率问题
+  - 提交代理端口配置后，并非同步将节点标记为占用状态，导致后续提取请求仍然会选中该节点，直到下一个提取请求才会发现该节点已满，导致提取失败？
 - otel 没有正确记录接口失败信息
-- 购买数低于最小限制
 
-创建 channel 时以 defer 的思路执行 fallback 函数，确保执行幂等性
+筛选和关联展示功能扩展
+
+channel 管理逻辑优化，需要携带 proxy 信息，考虑到 channel 没有成功创建的情况，或者保证创建操作的原子性
 
 错误提示增强，展示整链路信息
 
diff --git a/web/services/channel_baiyin.go b/web/services/channel_baiyin.go
index 2aa8f57..916a688 100644
--- a/web/services/channel_baiyin.go
+++ b/web/services/channel_baiyin.go
@@ -372,7 +372,7 @@ func (s *channelBaiyinProvider) ClearExpiredChannels(proxyId int32) (int, error)
 
 	// 排除未过期通道
 	var batchQueried []struct{ BatchNo string }
-	err = q.Channel.Debug().
+	err = q.Channel.
 		Select(q.Channel.BatchNo).
 		Where(
 			q.Channel.BatchNo.In(batchList...),
diff --git a/web/services/resource.go b/web/services/resource.go
index 570320b..9d72267 100644
--- a/web/services/resource.go
+++ b/web/services/resource.go
@@ -160,6 +160,10 @@ func (s *resourceService) CalcPrice(skuCode string, count int32, user *m.User, c
 		return nil, nil, nil, decimal.Zero, decimal.Zero, decimal.Zero, core.NewBizErr("产品不可用", err)
 	}
 
+	if count < sku.CountMin {
+		return nil, nil, nil, decimal.Zero, decimal.Zero, decimal.Zero, core.NewBizErr(fmt.Sprintf("购买数量不能少于 %d", sku.CountMin))
+	}
+
 	// 原价
 	amountMin := sku.PriceMin.Mul(decimal.NewFromInt32(count))
 	amount := sku.Price.Mul(decimal.NewFromInt32(count))