diff --git a/app/api/endpoints/order.py b/app/api/endpoints/order.py
index 28f9da1..ea84343 100644
--- a/app/api/endpoints/order.py
+++ b/app/api/endpoints/order.py
@@ -151,8 +151,8 @@ def calculate_price(price_request: OrderPriceCalculateRequest,user: UserDB,db: S
 def format_delivery_time(delivery_date: datetime, time_period_name: str) -> str:
     if delivery_date == datetime.now().date():
         return f"今日 {time_period_name}"
-    elif delivery_date == datetime.now().date() - timedelta(days=1):
-        return f"昨日 {time_period_name}"
+    elif delivery_date == datetime.now().date() + timedelta(days=1):
+        return f"明日 {time_period_name}"
     else:
         return f"{delivery_date.strftime('%Y-%m-%d')}"