diff --git a/src/src/Common/QGlobals.h b/src/src/Common/QGlobals.h
index ad49331..d9f7cf0 100644
--- a/src/src/Common/QGlobals.h
+++ b/src/src/Common/QGlobals.h
@@ -1,4 +1,6 @@
-#pragma once
+#ifndef  OMEGAV_QGLOBALS_H
+#define OMEGAV_QGLOBALS_H
+
 #include <QWidget>
 #include <QSize>
 #include <QString>
@@ -10,6 +12,7 @@
 #include <QVBoxLayout>
 #include <QPushButton>
 #include <memory>
+#include "Events/EventsCenter.h"
 
 #include <QGuiApplication>
 #include <QScreen>
@@ -18,11 +21,11 @@
 #include "IO/DICOM/ExtendMedicalImageProperties.h"
 using namespace std;
 
-// ����汾
+//
 #define Project_NAME "EquilibriumNine DicomViewer"
 #define Project_VER "1.0.0.0"
 
-//�����Ϣ
+//
 #define Project_OrganizationName "EquilibriumNine"
 #define Project_OrganizationDomain ""
 
@@ -318,6 +321,7 @@ public:
 	static void setSyncState(SyncState curState)
 	{
 		_syc_state = curState;
+        EventsCenter::TriggerEvent(SyncStateChanged);
 	}
 	static const QString SyncStateName[SYNC_STATE_NUM];// = { "AUTO_SYNC","MANUAL_SYNC","DIS_SYNC" };
 	static const QString SyncItemName[SYNC_ITEM_NUM];// = { "SLICE_LOC","ZOOM_PAN","WIDTH_LEVEL" };
@@ -362,3 +366,4 @@ typedef struct PatientInfo
 	}
 }PatientInfo_t;
 typedef std::map<std::string, PatientInfo_t*> PatientsMapType;
+#endif OMEGAV_QGLOBALS_H
diff --git a/src/src/Events/vtkSignalRaiser.h b/src/src/Events/vtkSignalRaiser.h
index 27c57d6..cc3378d 100644
--- a/src/src/Events/vtkSignalRaiser.h
+++ b/src/src/Events/vtkSignalRaiser.h
@@ -13,7 +13,6 @@ Q_OBJECT
 public :
     void raise(vtkObject *sender, unsigned long eventId, void *callData = nullptr);
 signals:
-
     void raiseEvent(vtkObject *sender, unsigned long eventId, void *callData = nullptr);
 
 
diff --git a/src/src/UI/Window/QDicomViewer.cpp b/src/src/UI/Window/QDicomViewer.cpp
index 3777230..9bb9eee 100644
--- a/src/src/UI/Window/QDicomViewer.cpp
+++ b/src/src/UI/Window/QDicomViewer.cpp
@@ -171,8 +171,11 @@ void QDicomViewer::createToolButton() {
     this->SetupMinimizeTool(btnminimize);
     this->SetupCloseTool(btnclose);
 
-    connect(btnMPR, &QToolButton::clicked, ui->viewContainer->getViewManager(),
-            &ImageViewManager::switchSliceOrientation);
+    connect(btnMPR, &QToolButton::clicked, [=](){
+        ui->viewContainer->getViewManager()->switchSliceOrientation();
+        SyncHelper::setSyncState(DIS_SYNC);
+        syncStateChanged();
+    });
 }
 
 void QDicomViewer::SetupFullScreenTool(QToolButton *btnfullscreen) {
@@ -482,7 +485,8 @@ void QDicomViewer::SetupFlipTool(QToolButton *flipBtn) {
 }
 
 //视窗操作，sync mode
-void QDicomViewer::SetupSyncTool(QToolButton *syncBtn) {
+void QDicomViewer::SetupSyncTool(QToolButton *btn) {
+    syncBtn = btn;
     syncBtn->setToolTip(QString("Toggle series synchronization"));
     // Menu
     QMenu * m = new QMenu(this);
@@ -513,35 +517,20 @@ void QDicomViewer::SetupSyncTool(QToolButton *syncBtn) {
 
     //loop click
     connect(syncBtn, &QToolButton::clicked, this,
-            &QDicomViewer::syncStateChanged);
+            &QDicomViewer::switchSyncState);
+    connect(EventsCenter::Default(), &EventsCenter::SyncStateChanged, this,  &QDicomViewer::syncStateChanged);
+}
+
+void QDicomViewer::switchSyncState(){
+    SyncHelper::setSyncState((SyncState)((SyncHelper::getSyncState()+1)%3));
 }
 
 void QDicomViewer::syncStateChanged() const {
-    QToolButton* syncBtn = qobject_cast<QToolButton*>(sender());
-    SyncState curst = SyncHelper::getSyncState();
-    switch (curst) {
+    if (!syncBtn) return;
+    switch (SyncHelper::getSyncState()) {
         case AUTO_SYNC:
-            syncBtn->setIcon(icon_manual);
-            m_sync_state_action->setText(QString(tr("CUR STATE: %1")).arg(SyncHelper::SyncStateName[MANUAL_SYNC]));
-
-            SyncHelper::setSyncState(MANUAL_SYNC);
-            m_sync_item_action[SLICE_POS]->setChecked(SyncHelper::getSyncItem(SLICE_POS));
-            m_sync_item_action[WIDTH_LEVEL]->setChecked(SyncHelper::getSyncItem(WIDTH_LEVEL));
-            m_sync_item_action[ZOOM_PAN]->setChecked(SyncHelper::getSyncItem(ZOOM_PAN));
-            break;
-        case MANUAL_SYNC:
-            syncBtn->setIcon(icon_dis);
-            m_sync_state_action->setText(QString(tr("CUR STATE: %1")).arg(SyncHelper::SyncStateName[DIS_SYNC]));
-            SyncHelper::setSyncState(DIS_SYNC);
-            for (int i = 0; i < SYNC_ITEM_NUM; i++) {
-                m_sync_item_action[i]->setChecked(false);
-                m_sync_item_action[i]->setDisabled(true);
-            }
-            break;
-        case DIS_SYNC:
             syncBtn->setIcon(icon_auto);
             m_sync_state_action->setText(QString(tr("CUR STATE: %1")).arg(SyncHelper::SyncStateName[AUTO_SYNC]));
-            SyncHelper::setSyncState(AUTO_SYNC);
             for (int i = 0; i < SYNC_ITEM_NUM; i++) {
                 m_sync_item_action[i]->setDisabled(false);
             }
@@ -549,6 +538,23 @@ void QDicomViewer::syncStateChanged() const {
             m_sync_item_action[WIDTH_LEVEL]->setChecked(SyncHelper::getSyncItem(WIDTH_LEVEL));
             m_sync_item_action[ZOOM_PAN]->setChecked(SyncHelper::getSyncItem(ZOOM_PAN));
             break;
+
+        case MANUAL_SYNC:{
+            syncBtn->setIcon(icon_manual);
+            m_sync_state_action->setText(QString(tr("CUR STATE: %1")).arg(SyncHelper::SyncStateName[MANUAL_SYNC]));
+            m_sync_item_action[SLICE_POS]->setChecked(SyncHelper::getSyncItem(SLICE_POS));
+            m_sync_item_action[WIDTH_LEVEL]->setChecked(SyncHelper::getSyncItem(WIDTH_LEVEL));
+            m_sync_item_action[ZOOM_PAN]->setChecked(SyncHelper::getSyncItem(ZOOM_PAN));
+            break;
+        }
+        case DIS_SYNC:
+            syncBtn->setIcon(icon_dis);
+            m_sync_state_action->setText(QString(tr("CUR STATE: %1")).arg(SyncHelper::SyncStateName[DIS_SYNC]));
+            for (int i = 0; i < SYNC_ITEM_NUM; i++) {
+                m_sync_item_action[i]->setChecked(false);
+                m_sync_item_action[i]->setDisabled(true);
+            }
+            break;
         default:
             break;
     }
diff --git a/src/src/UI/Window/QDicomViewer.h b/src/src/UI/Window/QDicomViewer.h
index 3ccd410..f37f276 100644
--- a/src/src/UI/Window/QDicomViewer.h
+++ b/src/src/UI/Window/QDicomViewer.h
@@ -105,6 +105,7 @@ private:
 	QIcon icon_manual;
 	QIcon icon_auto;
 	QIcon icon_dis;
+	QToolButton* syncBtn = nullptr;
 	QAction *m_sync_item_action[SYNC_ITEM_NUM];
 	QAction* m_sync_state_action;
 	QAction* m_measure_hidden_action;
@@ -124,4 +125,6 @@ private:
 	AnnotationActorType m_cur_measure = AnnotationActorType::RulerAnn;
 
     void syncStateChanged() const;
+    void switchSyncState();
+
 };