diff --git a/xymanager_framework/src/main/java/com/shxy/xymanager_framework/timeTask/MntnCheckTask.java b/xymanager_framework/src/main/java/com/shxy/xymanager_framework/timeTask/MntnCheckTask.java
index 20ebafa..0b056da 100644
--- a/xymanager_framework/src/main/java/com/shxy/xymanager_framework/timeTask/MntnCheckTask.java
+++ b/xymanager_framework/src/main/java/com/shxy/xymanager_framework/timeTask/MntnCheckTask.java
@@ -12,6 +12,7 @@ import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.scheduling.annotation.Scheduled;
 import org.springframework.stereotype.Service;
 
+import javax.annotation.PreDestroy;
 import javax.annotation.Resource;
 import java.util.HashMap;
 import java.util.Iterator;
@@ -32,7 +33,13 @@ public class MntnCheckTask {
     @Autowired
     private CacheService cacheService;
 
-    StringBuilder sb;
+    private StringBuilder sb;
+    private int shutdown = 0;
+
+    @PreDestroy
+    private void preDestroy() {
+        shutdown = 1;
+    }
 
     @Scheduled(initialDelay = 60000, fixedDelay = 60000)
     private void checkAll() {
@@ -41,7 +48,7 @@ public class MntnCheckTask {
             sb = new StringBuilder();
             Map<Integer, Terminals> terminalMap = cacheService.getTerminalMap();
             Iterator<Integer> it = terminalMap.keySet().iterator();
-            while (it.hasNext()) {
+            while (shutdown == 0 && it.hasNext()) {
                 Integer termId = it.next();
                 this.checkOne(termId);
             }