diff --git a/apm-collector/apm-collector-storage/collector-storage-define/src/main/java/org/apache/skywalking/apm/collector/storage/dao/ui/IInstanceUIDAO.java b/apm-collector/apm-collector-storage/collector-storage-define/src/main/java/org/apache/skywalking/apm/collector/storage/dao/ui/IInstanceUIDAO.java
index 1027154777a5b65e7cdc4cfaaa18f95a6da138df..b772bc6173eeba8c6f6843727115a8b5a49e566a 100644
--- a/apm-collector/apm-collector-storage/collector-storage-define/src/main/java/org/apache/skywalking/apm/collector/storage/dao/ui/IInstanceUIDAO.java
+++ b/apm-collector/apm-collector-storage/collector-storage-define/src/main/java/org/apache/skywalking/apm/collector/storage/dao/ui/IInstanceUIDAO.java
@@ -32,7 +32,7 @@ public interface IInstanceUIDAO extends DAO {
 
     Long instanceLastHeartBeatTime(long applicationInstanceId);
 
-    List<Application> getApplications(long startTime, long endTime, int... applicationIds);
+    List<Application> getApplications(long startSecondTimeBucket, long endSecondTimeBucket, int... applicationIds);
 
     Instance getInstance(int instanceId);
 
diff --git a/apm-collector/apm-collector-storage/collector-storage-es-provider/src/main/java/org/apache/skywalking/apm/collector/storage/es/dao/ui/InstanceEsUIDAO.java b/apm-collector/apm-collector-storage/collector-storage-es-provider/src/main/java/org/apache/skywalking/apm/collector/storage/es/dao/ui/InstanceEsUIDAO.java
index 918945f8c36924b02ed3b998e0b45b002260db68..faeefd4026eb3e49ffa0e6b773bb7657ef06db9e 100644
--- a/apm-collector/apm-collector-storage/collector-storage-es-provider/src/main/java/org/apache/skywalking/apm/collector/storage/es/dao/ui/InstanceEsUIDAO.java
+++ b/apm-collector/apm-collector-storage/collector-storage-es-provider/src/main/java/org/apache/skywalking/apm/collector/storage/es/dao/ui/InstanceEsUIDAO.java
@@ -97,14 +97,14 @@ public class InstanceEsUIDAO extends EsDAO implements IInstanceUIDAO {
         return heartBeatTime;
     }
 
-    @Override public List<Application> getApplications(long startTime, long endTime, int... applicationIds) {
-        logger.debug("application list get, start time: {}, end time: {}", startTime, endTime);
+    @Override public List<Application> getApplications(long startSecondTimeBucket, long endSecondTimeBucket, int... applicationIds) {
+        logger.debug("application list get, start time: {}, end time: {}", startSecondTimeBucket, endSecondTimeBucket);
         SearchRequestBuilder searchRequestBuilder = getClient().prepareSearch(InstanceTable.TABLE);
         searchRequestBuilder.setTypes(InstanceTable.TABLE_TYPE);
         searchRequestBuilder.setSearchType(SearchType.DFS_QUERY_THEN_FETCH);
 
         BoolQueryBuilder boolQueryBuilder = QueryBuilders.boolQuery();
-        boolQueryBuilder.must().add(QueryBuilders.rangeQuery(InstanceTable.COLUMN_HEARTBEAT_TIME).gte(startTime));
+        boolQueryBuilder.must().add(QueryBuilders.rangeQuery(InstanceTable.COLUMN_HEARTBEAT_TIME).gte(startSecondTimeBucket));
         boolQueryBuilder.must().add(QueryBuilders.termQuery(InstanceTable.COLUMN_IS_ADDRESS, BooleanUtils.FALSE));
         if (applicationIds.length > 0) {
             boolQueryBuilder.must().add(QueryBuilders.termsQuery(InstanceTable.COLUMN_APPLICATION_ID, applicationIds));
diff --git a/apm-collector/apm-collector-storage/collector-storage-h2-provider/src/main/java/org/apache/skywalking/apm/collector/storage/h2/dao/ui/InstanceH2UIDAO.java b/apm-collector/apm-collector-storage/collector-storage-h2-provider/src/main/java/org/apache/skywalking/apm/collector/storage/h2/dao/ui/InstanceH2UIDAO.java
index 68f3255d15657be823014dedf420b6bbced53bca..5622ac347b7469c07229c9e100653e29e62c5afc 100644
--- a/apm-collector/apm-collector-storage/collector-storage-h2-provider/src/main/java/org/apache/skywalking/apm/collector/storage/h2/dao/ui/InstanceH2UIDAO.java
+++ b/apm-collector/apm-collector-storage/collector-storage-h2-provider/src/main/java/org/apache/skywalking/apm/collector/storage/h2/dao/ui/InstanceH2UIDAO.java
@@ -88,12 +88,12 @@ public class InstanceH2UIDAO extends H2DAO implements IInstanceUIDAO {
     }
 
     @Override
-    public List<Application> getApplications(long startTime, long endTime, int... applicationIds) {
+    public List<Application> getApplications(long startSecondTimeBucket, long endSecondTimeBucket, int... applicationIds) {
         H2Client client = getClient();
         List<Application> applications = new LinkedList<>();
         String sql = SqlBuilder.buildSql(GET_APPLICATIONS_SQL, InstanceTable.COLUMN_INSTANCE_ID,
             InstanceTable.TABLE, InstanceTable.COLUMN_HEARTBEAT_TIME, InstanceTable.COLUMN_APPLICATION_ID);
-        Object[] params = new Object[] {startTime};
+        Object[] params = new Object[] {startSecondTimeBucket};
         try (ResultSet rs = client.executeQuery(sql, params)) {
             while (rs.next()) {
                 Integer applicationId = rs.getInt(InstanceTable.COLUMN_APPLICATION_ID);
diff --git a/apm-collector/apm-collector-ui/collector-ui-jetty-provider/src/main/java/org/apache/skywalking/apm/collector/ui/query/ApplicationQuery.java b/apm-collector/apm-collector-ui/collector-ui-jetty-provider/src/main/java/org/apache/skywalking/apm/collector/ui/query/ApplicationQuery.java
index 76b6fff4583c262b3882858cd8e5d5f411852d58..526be281a70268292c1c866bcce8fa88e45fbb57 100644
--- a/apm-collector/apm-collector-ui/collector-ui-jetty-provider/src/main/java/org/apache/skywalking/apm/collector/ui/query/ApplicationQuery.java
+++ b/apm-collector/apm-collector-ui/collector-ui-jetty-provider/src/main/java/org/apache/skywalking/apm/collector/ui/query/ApplicationQuery.java
@@ -69,10 +69,10 @@ public class ApplicationQuery implements Query {
     }
 
     public List<Application> getAllApplication(Duration duration) throws ParseException {
-        long start = DurationUtils.INSTANCE.durationToSecondTimeBucket(duration.getStep(), duration.getStart());
-        long end = DurationUtils.INSTANCE.durationToSecondTimeBucket(duration.getStep(), duration.getEnd());
+        long startSecondTimeBucket = DurationUtils.INSTANCE.durationToSecondTimeBucket(duration.getStep(), duration.getStart());
+        long endSecondTimeBucket = DurationUtils.INSTANCE.durationToSecondTimeBucket(duration.getStep(), duration.getEnd());
 
-        return getApplicationService().getApplications(start, end);
+        return getApplicationService().getApplications(startSecondTimeBucket, endSecondTimeBucket);
     }
 
     public Topology getApplicationTopology(int applicationId, Duration duration) throws ParseException {
diff --git a/apm-collector/apm-collector-ui/collector-ui-jetty-provider/src/main/java/org/apache/skywalking/apm/collector/ui/query/OverViewLayerQuery.java b/apm-collector/apm-collector-ui/collector-ui-jetty-provider/src/main/java/org/apache/skywalking/apm/collector/ui/query/OverViewLayerQuery.java
index c63f12da9d32a2b9e9de009a9d01700f7845565a..aceb82c0a8e4b449a73415c63a52b8b86b66aa79 100644
--- a/apm-collector/apm-collector-ui/collector-ui-jetty-provider/src/main/java/org/apache/skywalking/apm/collector/ui/query/OverViewLayerQuery.java
+++ b/apm-collector/apm-collector-ui/collector-ui-jetty-provider/src/main/java/org/apache/skywalking/apm/collector/ui/query/OverViewLayerQuery.java
@@ -21,9 +21,7 @@ package org.apache.skywalking.apm.collector.ui.query;
 import java.text.ParseException;
 import java.util.List;
 import org.apache.skywalking.apm.collector.core.module.ModuleManager;
-import org.apache.skywalking.apm.collector.core.util.Const;
 import org.apache.skywalking.apm.collector.core.util.ObjectUtils;
-import org.apache.skywalking.apm.collector.storage.ui.application.Application;
 import org.apache.skywalking.apm.collector.storage.ui.common.Duration;
 import org.apache.skywalking.apm.collector.storage.ui.common.Topology;
 import org.apache.skywalking.apm.collector.storage.ui.overview.AlarmTrend;
@@ -101,26 +99,11 @@ public class OverViewLayerQuery implements Query {
     }
 
     public ClusterBrief getClusterBrief(Duration duration) throws ParseException {
-        long start = DurationUtils.INSTANCE.durationToSecondTimeBucket(duration.getStep(), duration.getStart());
-        long end = DurationUtils.INSTANCE.durationToSecondTimeBucket(duration.getStep(), duration.getEnd());
+        long startSecondTimeBucket = DurationUtils.INSTANCE.durationToSecondTimeBucket(duration.getStep(), duration.getStart());
+        long endSecondTimeBucket = DurationUtils.INSTANCE.durationToSecondTimeBucket(duration.getStep(), duration.getEnd());
 
         ClusterBrief clusterBrief = new ClusterBrief();
-
-        List<Application> applications = getApplicationService().getApplications(start, end);
-
-        boolean containsUserApplication = false;
-        for (Application application : applications) {
-            if (application.getId() == Const.NONE_INSTANCE_ID) {
-                containsUserApplication = true;
-                break;
-            }
-        }
-
-        if (containsUserApplication) {
-            clusterBrief.setNumOfApplication(applications.size() - 1);
-        } else {
-            clusterBrief.setNumOfApplication(applications.size());
-        }
+        clusterBrief.setNumOfApplication(getApplicationService().getApplications(startSecondTimeBucket, endSecondTimeBucket).size());
         clusterBrief.setNumOfDatabase(getNetworkAddressService().getNumOfDatabase());
         clusterBrief.setNumOfCache(getNetworkAddressService().getNumOfCache());
         clusterBrief.setNumOfMQ(getNetworkAddressService().getNumOfMQ());
diff --git a/apm-collector/apm-collector-ui/collector-ui-jetty-provider/src/main/java/org/apache/skywalking/apm/collector/ui/service/ApplicationService.java b/apm-collector/apm-collector-ui/collector-ui-jetty-provider/src/main/java/org/apache/skywalking/apm/collector/ui/service/ApplicationService.java
index f4bb6ea77ba8c545f07a2da86827d7c1d93cac3c..b0564282a619b2ac9620e798ebcbef7a93de22cf 100644
--- a/apm-collector/apm-collector-ui/collector-ui-jetty-provider/src/main/java/org/apache/skywalking/apm/collector/ui/service/ApplicationService.java
+++ b/apm-collector/apm-collector-ui/collector-ui-jetty-provider/src/main/java/org/apache/skywalking/apm/collector/ui/service/ApplicationService.java
@@ -24,6 +24,7 @@ import org.apache.skywalking.apm.collector.cache.CacheModule;
 import org.apache.skywalking.apm.collector.cache.service.ApplicationCacheService;
 import org.apache.skywalking.apm.collector.cache.service.ServiceNameCacheService;
 import org.apache.skywalking.apm.collector.core.module.ModuleManager;
+import org.apache.skywalking.apm.collector.core.util.Const;
 import org.apache.skywalking.apm.collector.storage.StorageModule;
 import org.apache.skywalking.apm.collector.storage.dao.ui.IApplicationMetricUIDAO;
 import org.apache.skywalking.apm.collector.storage.dao.ui.IInstanceUIDAO;
@@ -60,8 +61,15 @@ public class ApplicationService {
         this.serviceNameCacheService = moduleManager.find(CacheModule.NAME).getService(ServiceNameCacheService.class);
     }
 
-    public List<Application> getApplications(long startTime, long endTime, int... applicationIds) {
-        List<Application> applications = instanceDAO.getApplications(startTime, endTime, applicationIds);
+    public List<Application> getApplications(long startSecondTimeBucket, long endSecondTimeBucket,
+        int... applicationIds) {
+        List<Application> applications = instanceDAO.getApplications(startSecondTimeBucket, endSecondTimeBucket, applicationIds);
+
+        applications.forEach(application -> {
+            if (application.getId() == Const.NONE_APPLICATION_ID) {
+                applications.remove(application);
+            }
+        });
 
         applications.forEach(application -> {
             String applicationCode = applicationCacheService.getApplicationById(application.getId()).getApplicationCode();