diff --git a/platform-operate-api/src/main/java/com/lyms/platform/operate/web/facade/BabyCheckFacade.java b/platform-operate-api/src/main/java/com/lyms/platform/operate/web/facade/BabyCheckFacade.java
index f4640c1..2515fe0 100644
--- a/platform-operate-api/src/main/java/com/lyms/platform/operate/web/facade/BabyCheckFacade.java
+++ b/platform-operate-api/src/main/java/com/lyms/platform/operate/web/facade/BabyCheckFacade.java
@@ -786,8 +786,9 @@ public class BabyCheckFacade {
                         //根据出生孕周计算末次月经
                         Date LastMens = DateUtil.addWeek(model.getBirth(),-model.getDueWeek());
                         //根据末次月经计算预产期
-                        Date dueDate = DateUtil.addMonth(LastMens, 9);
-                        dueDate = DateUtil.addDay(dueDate, 7);
+                        // Date dueDate = DateUtil.addMonth(LastMens, 9);
+                        // dueDate = DateUtil.addDay(dueDate, 7);
+                        Date dueDate = DateUtil.addDay(LastMens, 280);
                         //返回预产期
                         base.setDueDate(DateUtil.getyyyy_MM_dd(dueDate));
                     }else{