diff --git a/apps/mtm/models.py b/apps/mtm/models.py
index b3bae42b..b0788df6 100644
--- a/apps/mtm/models.py
+++ b/apps/mtm/models.py
@@ -229,7 +229,7 @@ class Mgroup(CommonBModel):
                     # 如果当前时间在结束时间之前，属于前一天
                     else:
                         return (w_s_time - timedelta(days=1)).date(), shift
-        # return w_s_time.date(), None
+        raise ParseError(f"工段{self.name}的班次规则未覆盖时间点{w_s_time.strftime('%H:%M:%S')}")
 
 
 class TeamMember(BaseModel):