diff --git a/deepin-system-monitor-main/gui/process_page_widget.cpp b/deepin-system-monitor-main/gui/process_page_widget.cpp
index 5b713555..c282105b 100644
--- a/deepin-system-monitor-main/gui/process_page_widget.cpp
+++ b/deepin-system-monitor-main/gui/process_page_widget.cpp
@@ -289,7 +289,8 @@ void ProcessPageWidget::initConnections()
 
     // update process summary text when process summary info updated background
     auto *monitor = ThreadManager::instance()->thread<SystemMonitorThread>(BaseThread::kSystemMonitorThread)->systemMonitorInstance();
-    connect(monitor, &SystemMonitor::statInfoUpdated, this, &ProcessPageWidget::onStatInfoUpdated, Qt::DirectConnection);
+    // Note: do not update on non-GUI thread.
+    connect(monitor, &SystemMonitor::appAndProcCountUpdate, this, &ProcessPageWidget::onAppAndProcCountUpdated);
 
     auto *dAppHelper = DApplicationHelper::instance();
     // change text color dynamically on theme type change, if not do this way, text color wont synchronize with theme type
@@ -409,27 +410,10 @@ void ProcessPageWidget::createWindowKiller()
             &ProcessPageWidget::popupKillConfirmDialog);
 }
 
-void ProcessPageWidget::onStatInfoUpdated()
+void ProcessPageWidget::onAppAndProcCountUpdated(int appCount, int procCount)
 {
-    QApplication::processEvents();
     const QString &buf = DApplication::translate("Process.Summary", kProcSummaryTemplateText);
-
-    ProcessSet *processSet = ProcessDB::instance()->processSet();
-    //记录所有进程数量
-    const QList<pid_t> &newpidlst = processSet->getPIDList();
-    m_iallProcNum = newpidlst.size();
-    int appCount = 0;
-    for (const auto &pid : newpidlst) {
-        auto process = processSet->getProcessById(pid);
-        if (process.appType() == kFilterApps)
-            appCount++;
-    }
-    m_procViewModeSummary->setText(buf.arg(appCount).arg(m_iallProcNum));
-    m_model = CPUInfoModel::instance();
-
-//    CPUPerformance = (m_model->cpuSet()->maxFreq() > CPU_FREQUENCY_STANDARD) ? High : Low;
-    //qInfo() << m_model->cpuSet()->maxFreq()  << (m_model->cpuSet()->maxFreq() > CPU_FREQUENCY_STANDARD) << CPUPerformance;
-
+    m_procViewModeSummary->setText(buf.arg(appCount).arg(procCount));
 }
 
 // change icon theme when theme changed
diff --git a/deepin-system-monitor-main/gui/process_page_widget.h b/deepin-system-monitor-main/gui/process_page_widget.h
index 62d3ba19..c222b010 100644
--- a/deepin-system-monitor-main/gui/process_page_widget.h
+++ b/deepin-system-monitor-main/gui/process_page_widget.h
@@ -107,9 +107,9 @@ private Q_SLOTS:
     void changeIconTheme(DApplicationHelper::ColorType themeType);
 
     /**
-     * @brief 列表数据刷新
+     * @brief 列表数据刷新，更新应用和进程统计
      */
-    void onStatInfoUpdated();
+    void onAppAndProcCountUpdated(int appCount, int procCount);
 
     /**
      * @brief 详情页切换
diff --git a/deepin-system-monitor-main/system/system_monitor.cpp b/deepin-system-monitor-main/system/system_monitor.cpp
index 658ddc90..d9f3bf1a 100644
--- a/deepin-system-monitor-main/system/system_monitor.cpp
+++ b/deepin-system-monitor-main/system/system_monitor.cpp
@@ -25,7 +25,6 @@ SystemMonitor::SystemMonitor(QObject *parent)
     , m_processDB(new ProcessDB(this))
 {
     m_sysInfo->readSysInfoStatic();
-
 }
 
 SystemMonitor::~SystemMonitor()
@@ -84,6 +83,7 @@ void SystemMonitor::timerEvent(QTimerEvent *event)
             m_processDB->update();
         } else {
             emit statInfoUpdated();
+            recountAppAndProcess();
         }
         if(cnt++ >250)
             cnt = 0;
@@ -97,6 +97,25 @@ void SystemMonitor::updateSystemMonitorInfo()
     m_processDB->update();
 
     emit statInfoUpdated();
+    recountAppAndProcess();
+}
+
+/**
+   @brief Count current apps and processes on SystemMonitor child thread.
+ */
+void SystemMonitor::recountAppAndProcess()
+{
+    ProcessSet *processSet = m_processDB->processSet();
+    // count all app
+    const QList<pid_t> &newpidlst = processSet->getPIDList();
+    int appCount = 0;
+    for (const auto &pid : newpidlst) {
+        auto process = processSet->getProcessById(pid);
+        if (process.appType() == kFilterApps)
+            appCount++;
+    }
+
+    emit appAndProcCountUpdate(appCount, newpidlst.size());
 }
 
 } // namespace system
diff --git a/deepin-system-monitor-main/system/system_monitor.h b/deepin-system-monitor-main/system/system_monitor.h
index ff5121d0..c44b4e38 100644
--- a/deepin-system-monitor-main/system/system_monitor.h
+++ b/deepin-system-monitor-main/system/system_monitor.h
@@ -30,6 +30,7 @@ class SystemMonitor : public QObject
 
 signals:
     void statInfoUpdated();
+    void appAndProcCountUpdate(int appCount, int procCount);
 
 public:
     explicit SystemMonitor(QObject *parent = nullptr);
@@ -48,6 +49,7 @@ class SystemMonitor : public QObject
 
 private:
     void updateSystemMonitorInfo();
+    void recountAppAndProcess();
 
 private:
     SysInfo      *m_sysInfo;