diff --git a/sec-beidou/src/main/java/com/imdroid/beidou/controller/IndexController.java b/sec-beidou/src/main/java/com/imdroid/beidou/controller/IndexController.java
index 9261d0db..1ab49383 100644
--- a/sec-beidou/src/main/java/com/imdroid/beidou/controller/IndexController.java
+++ b/sec-beidou/src/main/java/com/imdroid/beidou/controller/IndexController.java
@@ -35,7 +35,7 @@ public class IndexController extends BasicController{
     public String deviceOverview(Model m, HttpSession session) {
         initModel(m, session);
         Long deviceDeployedNum;
-        int deviceOnlineNum=0;
+        int deviceOfflineNum=0;
         int warning1Num=0;//一般告警
         int warning2Num=0;//严重告警
 
@@ -79,14 +79,14 @@ public class IndexController extends BasicController{
         }
 
         for(GnssStatus status:deviceList){
-            if(status.getState() != GnssStatus.STATE_OFFLINE) deviceOnlineNum++;
+            if(status.getState() == GnssStatus.STATE_OFFLINE) deviceOfflineNum++;
             if(status.getWarning() == WarningCfg.LEVEL_1) warning1Num++;
             else if(status.getWarning() == WarningCfg.LEVEL_2) warning2Num++;
         }
 
         m.addAttribute("deviceDeployedNum", deviceDeployedNum);
-        m.addAttribute("deviceOnlineNum", deviceOnlineNum);
-        m.addAttribute("deviceOfflineNum", deviceDeployedNum - deviceOnlineNum);
+        m.addAttribute("deviceOnlineNum", deviceDeployedNum-deviceOfflineNum);
+        m.addAttribute("deviceOfflineNum",  deviceOfflineNum);
         m.addAttribute("warning1Num", warning1Num);
         m.addAttribute("warning2Num", warning2Num);
         m.addAttribute("warningTotalNum", warning1Num+warning2Num);