diff --git a/modules/i3plus-ext-mes-pcn-apiservice/src/main/java/cn/estsh/i3plus/ext/mes/pcn/apiservice/serviceimpl/busi/MesWorkOrderService.java b/modules/i3plus-ext-mes-pcn-apiservice/src/main/java/cn/estsh/i3plus/ext/mes/pcn/apiservice/serviceimpl/busi/MesWorkOrderService.java
index 171bb56..af1742b 100644
--- a/modules/i3plus-ext-mes-pcn-apiservice/src/main/java/cn/estsh/i3plus/ext/mes/pcn/apiservice/serviceimpl/busi/MesWorkOrderService.java
+++ b/modules/i3plus-ext-mes-pcn-apiservice/src/main/java/cn/estsh/i3plus/ext/mes/pcn/apiservice/serviceimpl/busi/MesWorkOrderService.java
@@ -463,7 +463,7 @@ public class MesWorkOrderService implements IMesWorkOrderService {
         }
         MesBom next = mesBoms.iterator().next();
         //如果存在多个bomCode取最新的一个
-        return mesBoms.stream().collect(Collectors.groupingBy(MesBom::getBomCode)).get(next.getBomCode());
+        return mesBoms.stream().collect(Collectors.groupingBy(t -> t.getBomCode() + t.getEffStartTime())).get(next.getBomCode() + next.getEffStartTime());
     }
 
     private MesProductVersion getMesProductVersion(MesWorkOrder mesWorkOrder) {