diff --git a/src/main/java/com/mobai/openApi/SelectInstances.java b/src/main/java/com/mobai/openApi/SelectInstances.java
index d1d198f..4e17cad 100644
--- a/src/main/java/com/mobai/openApi/SelectInstances.java
+++ b/src/main/java/com/mobai/openApi/SelectInstances.java
@@ -52,7 +52,7 @@ public class SelectInstances {
     }
 
     //    @Scheduled(cron = "0 0/10 * * * ? ")
-    @Scheduled(cron = "0/10 * * * * ? ")
+    @Scheduled(cron = "0 0/10 * * * ? ")
     public void saveIps() throws Exception {
         List<String> ips = new ArrayList<>();
         com.aliyun.ecs20140526.Client client = SelectInstances.createClient();
@@ -160,6 +160,7 @@ public class SelectInstances {
                 int i1 = map.get(ip) - 1;
                 map.put(ip, i1);
                 if (i1 == 0) {
+                    iterator.remove();
                     map.remove(ip);
                 }
             }