diff --git a/src/main/java/com/xydl/cac/comparator/MissCompare.java b/src/main/java/com/xydl/cac/comparator/MissCompare.java
index a685ca5..0ea1c43 100644
--- a/src/main/java/com/xydl/cac/comparator/MissCompare.java
+++ b/src/main/java/com/xydl/cac/comparator/MissCompare.java
@@ -1,18 +1,24 @@
 package com.xydl.cac.comparator;
 
 
+import com.xydl.cac.exception.BusinessException;
+
 import java.util.Date;
 import java.util.LinkedHashMap;
 
 public class MissCompare extends Comparator {
 
+    // 一天触发一次
+    boolean done = false;
+
     @Override
     public boolean compare(Object source, String threshold, Date lastDTime) {
-        if (source == null && lastDTime != null) {
+        if (!done && source == null && lastDTime != null) {
             long t2 = Long.parseLong(threshold);
             long last = System.currentTimeMillis() - lastDTime.getTime();
             hours = last / 1000 / 60 / 60;
             if (hours >= t2) {
+                done = true;
                 return true;
             }
         }
@@ -28,6 +34,10 @@ public class MissCompare extends Comparator {
 
     @Override
     public void valid(String operator, String threshold) throws Exception {
+        Integer hours = Integer.parseInt(threshold);
+        if (hours <= 1) {
+            throw new BusinessException("阈值必须大于1");
+        }
     }
 
 }
diff --git a/src/main/java/com/xydl/cac/task/CacheTask.java b/src/main/java/com/xydl/cac/task/CacheTask.java
index 0afd9d3..f0c87f0 100644
--- a/src/main/java/com/xydl/cac/task/CacheTask.java
+++ b/src/main/java/com/xydl/cac/task/CacheTask.java
@@ -27,7 +27,7 @@ public class CacheTask {
     public static List<Zsb> zsb_Cache = null;
     public static ConcurrentHashMap<Integer, WarnRule> rule_Cache = new ConcurrentHashMap<>();
 
-    @Scheduled(cron = "0 1 * * * ?")
+    @Scheduled(cron = "0 9 * * * ?")
     private void clearCache() {
         unit_Cache.clear();
         modevType_Cache = null;