diff --git a/QtScrcpy/device/device.cpp b/QtScrcpy/device/device.cpp
index 0f027ea..9dc12eb 100644
--- a/QtScrcpy/device/device.cpp
+++ b/QtScrcpy/device/device.cpp
@@ -286,8 +286,9 @@ void Device::onSetControlState(Device* device, Device::GroupControlState state)
     if (m_controlState == state) {
         return;
     }
+    GroupControlState oldState = m_controlState;
     m_controlState = state;
-    emit controlStateChange(this, m_controlState);
+    emit controlStateChange(this, oldState, m_controlState);
 }
 
 void Device::onGrabCursor(bool grab)
diff --git a/QtScrcpy/device/device.h b/QtScrcpy/device/device.h
index 9a43b91..cc7dd6d 100644
--- a/QtScrcpy/device/device.h
+++ b/QtScrcpy/device/device.h
@@ -84,7 +84,7 @@ signals:
     void grabCursor(bool grab);
 
     // for notify
-    void controlStateChange(Device* device, Device::GroupControlState state);
+    void controlStateChange(Device* device, Device::GroupControlState oldState, Device::GroupControlState newState);
 
 public slots:
     void onScreenshot();
diff --git a/QtScrcpy/device/ui/toolform.cpp b/QtScrcpy/device/ui/toolform.cpp
index dc7172b..e640bd4 100644
--- a/QtScrcpy/device/ui/toolform.cpp
+++ b/QtScrcpy/device/ui/toolform.cpp
@@ -215,9 +215,10 @@ void ToolForm::on_groupControlBtn_clicked()
     }
 }
 
-void ToolForm::onControlStateChange(Device *device, Device::GroupControlState state)
+void ToolForm::onControlStateChange(Device *device, Device::GroupControlState oldState, Device::GroupControlState newState)
 {
     Q_UNUSED(device)
-    Q_UNUSED(state)
+    Q_UNUSED(oldState)
+    Q_UNUSED(newState)
     updateGroupControl();
 }
diff --git a/QtScrcpy/device/ui/toolform.h b/QtScrcpy/device/ui/toolform.h
index 1c4d10b..037e55c 100644
--- a/QtScrcpy/device/ui/toolform.h
+++ b/QtScrcpy/device/ui/toolform.h
@@ -45,7 +45,7 @@ private slots:
     void on_touchBtn_clicked();
     void on_groupControlBtn_clicked();
 
-    void onControlStateChange(Device* device, Device::GroupControlState state);
+    void onControlStateChange(Device* device, Device::GroupControlState oldState, Device::GroupControlState newState);
 
 private:
     void initStyle();
diff --git a/QtScrcpy/devicemanage/devicemanage.cpp b/QtScrcpy/devicemanage/devicemanage.cpp
index 8379911..f0d0e44 100644
--- a/QtScrcpy/devicemanage/devicemanage.cpp
+++ b/QtScrcpy/devicemanage/devicemanage.cpp
@@ -1,4 +1,7 @@
 #include <QDebug>
+#include <QMouseEvent>
+#include <QWheelEvent>
+#include <QKeyEvent>
 
 #include "devicemanage.h"
 #include "server.h"
@@ -44,6 +47,7 @@ bool DeviceManage::connectDevice(Device::DeviceParams params)
     */
     Device *device = new Device(params);
     connect(device, &Device::deviceDisconnect, this, &DeviceManage::onDeviceDisconnect);
+    connect(device, &Device::controlStateChange, this, &DeviceManage::onControlStateChange);
     m_devices[params.serial] = device;
     return true;
 }
@@ -102,13 +106,114 @@ void DeviceManage::disconnectAllDevice()
     }
 }
 
+void DeviceManage::setGroupControlSignals(Device *host, Device *client, bool install)
+{
+    if (!host || !client) {
+        return;
+    }
+    if (install) {
+        connect(host, &Device::postGoBack, client, &Device::postGoBack);
+        connect(host, &Device::postGoHome, client, &Device::postGoHome);
+        connect(host, &Device::postGoMenu, client, &Device::postGoMenu);
+        connect(host, &Device::postAppSwitch, client, &Device::postAppSwitch);
+        connect(host, &Device::postPower, client, &Device::postPower);
+        connect(host, &Device::postVolumeUp, client, &Device::postVolumeUp);
+        connect(host, &Device::postVolumeDown, client, &Device::postVolumeDown);
+        connect(host, &Device::setScreenPowerMode, client, &Device::setScreenPowerMode);
+        connect(host, &Device::expandNotificationPanel, client, &Device::expandNotificationPanel);
+        connect(host, &Device::postTurnOn, client, &Device::postTurnOn);
+        connect(host, &Device::postTextInput, client, &Device::postTextInput);
+        connect(host, &Device::setDeviceClipboard, client, &Device::setDeviceClipboard);
+        connect(host, &Device::clipboardPaste, client, &Device::clipboardPaste);
+        connect(host, &Device::pushFileRequest, client, &Device::pushFileRequest);
+        connect(host, &Device::installApkRequest, client, &Device::installApkRequest);
+        connect(host, &Device::mouseEvent, client, &Device::mouseEvent);
+        connect(host, &Device::wheelEvent, client, &Device::wheelEvent);
+        connect(host, &Device::keyEvent, client, &Device::keyEvent);
+        connect(host, &Device::screenshot, client, &Device::screenshot);
+        connect(host, &Device::showTouch, client, &Device::showTouch);
+        // dont connect requestDeviceClipboard
+        //connect(host, &Device::requestDeviceClipboard, client, &Device::requestDeviceClipboard);
+    } else {
+        disconnect(host, &Device::postGoBack, client, &Device::postGoBack);
+        disconnect(host, &Device::postGoHome, client, &Device::postGoHome);
+        disconnect(host, &Device::postGoMenu, client, &Device::postGoMenu);
+        disconnect(host, &Device::postAppSwitch, client, &Device::postAppSwitch);
+        disconnect(host, &Device::postPower, client, &Device::postPower);
+        disconnect(host, &Device::postVolumeUp, client, &Device::postVolumeUp);
+        disconnect(host, &Device::postVolumeDown, client, &Device::postVolumeDown);
+        disconnect(host, &Device::setScreenPowerMode, client, &Device::setScreenPowerMode);
+        disconnect(host, &Device::expandNotificationPanel, client, &Device::expandNotificationPanel);
+        disconnect(host, &Device::postTurnOn, client, &Device::postTurnOn);
+        disconnect(host, &Device::postTextInput, client, &Device::postTextInput);
+        disconnect(host, &Device::setDeviceClipboard, client, &Device::setDeviceClipboard);
+        disconnect(host, &Device::clipboardPaste, client, &Device::clipboardPaste);
+        disconnect(host, &Device::pushFileRequest, client, &Device::pushFileRequest);
+        disconnect(host, &Device::installApkRequest, client, &Device::installApkRequest);
+        disconnect(host, &Device::mouseEvent, client, &Device::mouseEvent);
+        disconnect(host, &Device::wheelEvent, client, &Device::wheelEvent);
+        disconnect(host, &Device::keyEvent, client, &Device::keyEvent);
+        disconnect(host, &Device::screenshot, client, &Device::screenshot);
+        disconnect(host, &Device::showTouch, client, &Device::showTouch);
+    }
+}
+
+void DeviceManage::setGroupControlHost(Device *host, bool install)
+{
+    QMapIterator<QString, QPointer<Device>> i(m_devices);
+    while (i.hasNext()) {
+        i.next();
+        if (!i.value()) {
+            continue;
+        }
+        if (i.value() == host) {
+            continue;
+        }
+        if (install) {
+            if (host) {
+                setGroupControlSignals(host, i.value(), true);
+            }
+            emit i.value()->setControlState(i.value(), Device::GroupControlState::GCS_CLIENT);
+        } else {
+            if (host) {
+                setGroupControlSignals(host, i.value(), false);
+            }
+            emit i.value()->setControlState(i.value(), Device::GroupControlState::GCS_FREE);
+        }
+    }
+}
+
 void DeviceManage::onDeviceDisconnect(QString serial)
 {
     if (!serial.isEmpty() && m_devices.contains(serial)) {
+        if (m_devices[serial]->controlState() == Device::GroupControlState::GCS_HOST) {
+            setGroupControlHost(nullptr, false);
+        }
         m_devices.remove(serial);
     }
 }
 
+void DeviceManage::onControlStateChange(Device *device, Device::GroupControlState oldState, Device::GroupControlState newState)
+{
+    if (!device) {
+        return;
+    }
+    // free to host
+    if (oldState == Device::GroupControlState::GCS_FREE
+            && newState == Device::GroupControlState::GCS_HOST) {
+        // install control signals
+        setGroupControlHost(device, true);
+        return;
+    }
+    // host to free
+    if (oldState == Device::GroupControlState::GCS_HOST
+            && newState == Device::GroupControlState::GCS_FREE) {
+        // uninstall control signals
+        setGroupControlHost(device, false);
+        return;
+    }
+}
+
 quint16 DeviceManage::getFreePort()
 {
     quint16 port = m_localPortStart;    
diff --git a/QtScrcpy/devicemanage/devicemanage.h b/QtScrcpy/devicemanage/devicemanage.h
index bfe1f7c..cbef25c 100644
--- a/QtScrcpy/devicemanage/devicemanage.h
+++ b/QtScrcpy/devicemanage/devicemanage.h
@@ -20,8 +20,13 @@ public:
     bool disconnectDevice(const QString &serial);
     void disconnectAllDevice();
 
+protected:
+    void setGroupControlSignals(Device *host, Device *client, bool install);
+    void setGroupControlHost(Device *host, bool install);
+
 protected slots:
     void onDeviceDisconnect(QString serial);
+    void onControlStateChange(Device* device, Device::GroupControlState oldState, Device::GroupControlState newState);
 
 private:
     quint16 getFreePort();