diff --git a/src/engine/calculate_fan.py b/src/engine/calculate_fan.py
index 65ed9fc..33ca5c1 100644
--- a/src/engine/calculate_fan.py
+++ b/src/engine/calculate_fan.py
@@ -16,7 +16,7 @@ def calculate_fan(hand, melds, is_self_draw, is_cleared, conditions):
 
     # 定义番种规则
     rules = {
-        "basic_win": lambda: 1,  # 平胡
+        "basic_win": lambda: 1 if not conditions.get("is_seven_pairs", False) else 0,  # 平胡（七对不加基本胡）
         "is_cleared": lambda: 2 if is_cleared else 0,  # 清一色
         "is_pure_cleared": lambda: 3 if is_cleared and len(melds) >= 1 else 0,  # 清对
         "is_double_pure_cleared": lambda: 4 if is_cleared and len(melds) >= 2 else 0,  # 极中极
@@ -43,6 +43,7 @@ def calculate_fan(hand, melds, is_self_draw, is_cleared, conditions):
 
 
 
+
 def is_seven_pairs(hand):
     """
     检查手牌是否是七对。