diff --git a/app/api/endpoints/order.py b/app/api/endpoints/order.py
index fe246ff..8a1f6ac 100644
--- a/app/api/endpoints/order.py
+++ b/app/api/endpoints/order.py
@@ -365,7 +365,7 @@ async def get_order_detail(
             ).count()
 
             # 计算配送员分账金额
-            deliveryman_share = round(order.original_amount * deliveryman_user.delivery_commission_rate / 100, 1)
+            deliveryman_share = round(order.original_amount * (deliveryman_user.delivery_commission_rate / 100.0), 1)
     else:
         delivery_count = 0
         deliveryman_user_name = None