diff --git a/internal/biz/register_tag.go b/internal/biz/register_tag.go
index 5a4c902..54ffb52 100644
--- a/internal/biz/register_tag.go
+++ b/internal/biz/register_tag.go
@@ -31,6 +31,7 @@ func (this *VoucherBiz) RegisterTag(ctx context.Context, id int32) error {
 		}
 	}
 
+	_ = this.ProductRepo.DelCacheByProductNo(ctx, stock.ProductNo)
 	_, err = this.ProductRepo.GetByProductNo(ctx, stock.ProductNo)
 
 	return err
diff --git a/internal/biz/repo/product.go b/internal/biz/repo/product.go
index fbf75f2..ef01d26 100644
--- a/internal/biz/repo/product.go
+++ b/internal/biz/repo/product.go
@@ -12,5 +12,6 @@ type ProductRepo interface {
 	GetByBatchNo(ctx context.Context, batchNo string) (*bo.ProductBo, error)
 	GetByMchStockId(ctx context.Context, mchId, stockId string) (*bo.ProductBo, error)
 	GetByProductNo(ctx context.Context, productNo string) (*bo.ProductBo, error)
+	DelCacheByProductNo(ctx context.Context, productNo string) error
 	UpdateByWxResp(ctx context.Context, id int32, req *do.WxResp) error
 }
diff --git a/internal/data/repoimpl/product.go b/internal/data/repoimpl/product.go
index d1510b4..93e3592 100644
--- a/internal/data/repoimpl/product.go
+++ b/internal/data/repoimpl/product.go
@@ -131,6 +131,15 @@ func (r *ProductRepoImpl) GetByMchStockId(ctx context.Context, mchId, stockId st
 	return r.ToBo(item), nil
 }
 
+func (r *ProductRepoImpl) DelCacheByProductNo(ctx context.Context, productNo string) error {
+
+	c := vo.ProductQueryKey.BuildCache([]string{productNo})
+
+	_, _ = r.rdb.Rdb.Del(ctx, c.Key).Result()
+
+	return nil
+}
+
 func (r *ProductRepoImpl) GetByProductNo(ctx context.Context, productNo string) (*bo.ProductBo, error) {
 
 	c := vo.ProductQueryKey.BuildCache([]string{productNo})