diff --git a/core/routers/pay/routes.py b/core/routers/pay/routes.py
index 89d865b..0a0d05c 100644
--- a/core/routers/pay/routes.py
+++ b/core/routers/pay/routes.py
@@ -60,7 +60,7 @@ async def create_order(
     if product is None:
         raise HTTPException(status.HTTP_404_NOT_FOUND, detail='产品不存在')
 
-    if product.number != payload.total_fee:
+    if product.price != payload.total_fee:
         raise HTTPException(status.HTTP_400_BAD_REQUEST, detail='产品费用不合法')
 
     client_ip = (
diff --git a/core/routers/product/schema.py b/core/routers/product/schema.py
index e3c7b30..8cb4ff0 100644
--- a/core/routers/product/schema.py
+++ b/core/routers/product/schema.py
@@ -16,8 +16,8 @@ class Product(BaseModel):
     category: ProductCategory
     price: int
     number: int
-    description: str | None
+    description: str | None = None
 
 
 class ProductOut(Product):
-    gift_product: Product | None
+    gift_product: Product | None = None