diff --git a/yudao-module-bpm/yudao-module-bpm-biz/src/main/java/cn/iocoder/yudao/module/bpm/service/oa/BpmOAWorkTaskServiceImpl.java b/yudao-module-bpm/yudao-module-bpm-biz/src/main/java/cn/iocoder/yudao/module/bpm/service/oa/BpmOAWorkTaskServiceImpl.java
index 92e8c098..6385707c 100644
--- a/yudao-module-bpm/yudao-module-bpm-biz/src/main/java/cn/iocoder/yudao/module/bpm/service/oa/BpmOAWorkTaskServiceImpl.java
+++ b/yudao-module-bpm/yudao-module-bpm-biz/src/main/java/cn/iocoder/yudao/module/bpm/service/oa/BpmOAWorkTaskServiceImpl.java
@@ -220,7 +220,7 @@ public class BpmOAWorkTaskServiceImpl extends BpmOABaseService implements BpmOAW
         dataPage.getList().forEach(data -> {
 
             data.setFromUserName(fromUserMap.get(data.getFromUserId()).getNickname());
-            data.setTaskId(taskExtDOMap.get(data.getProcessInstanceId()).getTaskId());
+            data.setTaskId(taskExtDOMap.get(data.getProcessInstanceId()) != null ? taskExtDOMap.get(data.getProcessInstanceId()).getTaskId() : null);
         });
 
         return dataPage;