diff --git a/src/appvals/AppGlobalValues.h b/src/appvals/AppGlobalValues.h
index b1b088a..fbd18e3 100644
--- a/src/appvals/AppGlobalValues.h
+++ b/src/appvals/AppGlobalValues.h
@@ -8,7 +8,8 @@
 #define APP_VALUES()\
 ADD_APP_VALUE(InProcessing)\
 ADD_APP_VALUE(LastOperationTime)\
-ADD_APP_VALUE(LastOperation)
+ADD_APP_VALUE(LastOperation)\
+ADD_APP_VALUE(EmptyScanFlag)\
 
 #include <QApplication>
 #include <QVariant>
diff --git a/src/device/DeviceManager.cpp b/src/device/DeviceManager.cpp
index ae28cde..25cda10 100644
--- a/src/device/DeviceManager.cpp
+++ b/src/device/DeviceManager.cpp
@@ -10,6 +10,7 @@
 #include <QDateTime>
 #include <qdebug.h>
 #include "appvals/AppGlobalValues.h"
+#include "json/ScanJson.h"
 #define TRIGGER_EVENT EventCenter::Default()->triggerEvent
 
 #define THROW_ERROR(errormsg)\
@@ -31,7 +32,6 @@ const char* getStatusString(int status)
 	return "";
 }
 
-
 std::string getJsonFromPatInf(QObject* obj)
 {
 	return ((QString*)obj)->toStdString();
@@ -229,6 +229,22 @@ void DeviceManager::timerEvent(QTimerEvent* event) {
 					QString s("%1  %2");
 					s = s.arg(QDateTime::currentDateTime().toString("yyyy/MM/dd HH:mm:ss")).arg("Scan finished");
 					TRIGGER_EVENT(GUIEvents::GlobalBannerMessage, nullptr, (QObject*)&s);
+                    QString outputPath = GetDeviceInfo(DeviceInfo::DEV_OUTPATH);
+                    outputPath = outputPath.replace("\\","/");
+                    if (outputPath.endsWith('/')) outputPath = outputPath.remove(outputPath.length()-1,1);
+                    QStringList list  = outputPath.split('/');
+                    if (list.length()){
+                        if (AppGlobalValues::EmptyScanFlag().toBool()){
+                            ScanJson::Current()->setEmptyScanID(list.last().toStdString().c_str());
+                        }else{
+                            ScanJson::Current()->setScanID(list.last().toStdString().c_str());
+                        }
+                        ScanJson::Current()->save();
+                    }
+                    else{
+                        QString msg("Scan Output Path error!");
+                        THROW_ERROR(msg);
+                    }
 				}
 				//一般不会出现其他情况
 				else {
@@ -267,6 +283,7 @@ void DeviceManager::processScan(const char* json, bool empty) {
 	AppGlobalValues::setInProcessing(true);
 	TRIGGER_EVENT(GUIEvents::InvokeOperationStart, nullptr, (QObject*)&msg);
 	qDebug() << "SetScanInfo>>>>>>>>>>>>>>>>>>>>";
+    AppGlobalValues::setEmptyScanFlag(empty);
 	int ret = SetScanInfo(json, empty ? 1 : 0);
 	if (ret) {
 		qDebug() << ">>>>>>>>>>>>>>>>>>>>SetScanInfo failed";
@@ -293,6 +310,9 @@ void DeviceManager::processScan(const char* json, bool empty) {
 }
 
 void DeviceManager::close() {
+    #ifdef _WIN32
+    StopDevice();
+    #endif
     previewDataCaller->terminate();
     delete previewDataCaller;
 }
diff --git a/src/forms/scan/patientinformationform.cpp b/src/forms/scan/patientinformationform.cpp
index b094f26..fbc2d1e 100644
--- a/src/forms/scan/patientinformationform.cpp
+++ b/src/forms/scan/patientinformationform.cpp
@@ -2,17 +2,13 @@
 #include "ui_patientinformationform.h"
 #include "json/cJSON.h"
 #include "event/EventCenter.h"
+#include "json/ScanJson.h"
 
 PatientInformationForm::PatientInformationForm(QWidget* parent) :
 	QWidget(parent),
 	ui(new Ui::PatientInformationForm)
 {
 	ui->setupUi(this);
-	//ui->lbl_ID->setText(tr(""));
-	//ui->lbl_Date->setText(tr(""));
-	//ui->lbl_Name->setText(tr(""));
-	//ui->lbl_Sex->setText(tr(""));
-	//ui->lbl_Acc->setText(tr(""));
 
 	connect(EventCenter::Default(), &EventCenter::ReloadLanguage, [=]() {
 		ui->retranslateUi(this);
@@ -63,6 +59,6 @@ const char* PatientInformationForm::getCurrentPatientJsonString(bool empty) {
 	cJSON_AddItemToObject(root, "InstitutionAddress", cJSON_CreateString("HZ"));
 	delete jsonstr;
 	jsonstr = cJSON_Print(root);
-	cJSON_Delete(root);
+    ScanJson::Current()->store(root);
 	return jsonstr;
 }
diff --git a/src/json/ScanJson.cpp b/src/json/ScanJson.cpp
new file mode 100644
index 0000000..e6145b0
--- /dev/null
+++ b/src/json/ScanJson.cpp
@@ -0,0 +1,20 @@
+//
+// Created by Krad on 2022/5/11.
+//
+
+#include "ScanJson.h"
+#include <QFile>
+#include <QDir>
+#include <QCoreApplication>
+void ScanJson::save() {
+    if (!root) return;
+    QFile f(QString("%1/%2.json").arg(QCoreApplication::applicationDirPath(),scanID.c_str()));
+    f.open(QFileDevice::ReadWrite);
+    cJSON_AddItemToObject(root, "EmptyScanID", cJSON_CreateString(emptyScanID.c_str()));
+    cJSON_AddItemToObject(root, "ScanID", cJSON_CreateString(scanID.c_str()));
+    char* content = cJSON_Print(root);
+    f.write(content);
+    f.flush();
+    f.close();
+    free(content);
+}
diff --git a/src/json/ScanJson.h b/src/json/ScanJson.h
new file mode 100644
index 0000000..296dda4
--- /dev/null
+++ b/src/json/ScanJson.h
@@ -0,0 +1,44 @@
+//
+// Created by Krad on 2022/5/11.
+//
+
+#ifndef GUI_SCANJSON_H
+#define GUI_SCANJSON_H
+
+#include <string>
+#include "cJSON.h"
+
+class ScanJson {
+public:
+    ~ScanJson(){
+        if(root)cJSON_Delete(root);
+    }
+    void store(cJSON* json){
+        if(root){
+            cJSON_Delete(root);
+            root = nullptr;
+        }
+        root = json;
+    }
+    void setScanID(const char * id){
+        scanID.clear();
+        scanID.append(id);
+    }
+    void setEmptyScanID(const char * id){
+        emptyScanID.clear();
+        emptyScanID.append(id);
+        setScanID(id);
+    }
+    void save();
+    static ScanJson* Current(){
+        static ScanJson instance;
+        return &instance;
+    }
+private:
+    std::string emptyScanID;
+    std::string scanID;
+    cJSON* root = nullptr;
+};
+
+
+#endif //GUI_SCANJSON_H