diff --git a/muyu-quest-server/src/main/java/com/muyu/quest/manager/TaskManager.java b/muyu-quest-server/src/main/java/com/muyu/quest/manager/TaskManager.java
index a99ef83..6e0684e 100644
--- a/muyu-quest-server/src/main/java/com/muyu/quest/manager/TaskManager.java
+++ b/muyu-quest-server/src/main/java/com/muyu/quest/manager/TaskManager.java
@@ -118,6 +118,7 @@ public final class TaskManager {
             }
         }
         log.info("任务完成,线程状态: {}",this.toString());
+        taskManager=null;
     }
 
     // 返回工作线程的个数