diff --git a/Classes/main.cpp b/Classes/main.cpp
index fa5809c..b529ba2 100644
--- a/Classes/main.cpp
+++ b/Classes/main.cpp
@@ -1,10 +1,11 @@
-#include "Reconstruction.h"
 #include <QtWidgets/QApplication>
+#include "Loading.h"
+#include "Reconstruction.h"
 
 int main(int argc, char *argv[])
 {
 	QApplication a(argc, argv);
-	Reconstruction w;
-	w.show();
+	Loading l;
+	l.show();
 	return a.exec();
 }
diff --git a/Loading.cpp b/Loading.cpp
new file mode 100644
index 0000000..b3caa1a
--- /dev/null
+++ b/Loading.cpp
@@ -0,0 +1,38 @@
+#include "Loading.h"
+#include "Classes/Reconstruction.h"
+
+Loading::Loading(QWidget *parent)
+	: QWidget(parent)
+{
+	ui.setupUi(this);
+	ui.label_2->hide();
+	ui.progressBar->setValue(0);
+	
+	// todo ����
+
+	ui.progressBar->setValue(100);
+	ui.label_2->show();
+	ready2Enter = true;
+}
+
+Loading::~Loading()
+{
+}
+
+void Loading::updateSlot()
+{
+	ui.progressBar->setValue(currentValue);
+}
+
+void Loading::mousePressEvent(QMouseEvent *event)
+{
+	if(ready2Enter)
+	{
+		if (event->button() == Qt::LeftButton)
+		{	
+			this->hide();
+			Reconstruction *w = new Reconstruction();
+			w->show();
+		}
+	}
+}
diff --git a/Loading.h b/Loading.h
new file mode 100644
index 0000000..e0852fd
--- /dev/null
+++ b/Loading.h
@@ -0,0 +1,24 @@
+#pragma once
+
+#include <QWidget>
+#include "ui_Loading.h"
+#include <QMouseEvent>
+
+class Loading : public QWidget
+{
+	Q_OBJECT
+
+public:
+	Loading(QWidget *parent = Q_NULLPTR);
+	~Loading();
+
+private:
+	Ui::Loading ui;
+	bool ready2Enter = false;
+	int currentValue = 0;
+	void updateSlot();
+
+protected:
+	void mousePressEvent(QMouseEvent *);
+
+};
diff --git a/Loading.ui b/Loading.ui
new file mode 100644
index 0000000..6d229dc
--- /dev/null
+++ b/Loading.ui
@@ -0,0 +1,71 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<ui version="4.0">
+ <class>Loading</class>
+ <widget class="QWidget" name="Loading">
+  <property name="geometry">
+   <rect>
+    <x>0</x>
+    <y>0</y>
+    <width>871</width>
+    <height>494</height>
+   </rect>
+  </property>
+  <property name="windowTitle">
+   <string>Loading</string>
+  </property>
+  <widget class="QLabel" name="label">
+   <property name="geometry">
+    <rect>
+     <x>340</x>
+     <y>150</y>
+     <width>151</width>
+     <height>41</height>
+    </rect>
+   </property>
+   <property name="font">
+    <font>
+     <family>Adobe Devanagari</family>
+     <pointsize>18</pointsize>
+    </font>
+   </property>
+   <property name="text">
+    <string>LOADING...</string>
+   </property>
+  </widget>
+  <widget class="QProgressBar" name="progressBar">
+   <property name="geometry">
+    <rect>
+     <x>80</x>
+     <y>330</y>
+     <width>711</width>
+     <height>23</height>
+    </rect>
+   </property>
+   <property name="value">
+    <number>0</number>
+   </property>
+  </widget>
+  <widget class="QLabel" name="label_2">
+   <property name="geometry">
+    <rect>
+     <x>320</x>
+     <y>420</y>
+     <width>181</width>
+     <height>31</height>
+    </rect>
+   </property>
+   <property name="font">
+    <font>
+     <family>书体坊雪纯体3500</family>
+     <pointsize>18</pointsize>
+    </font>
+   </property>
+   <property name="text">
+    <string>按任意键进入</string>
+   </property>
+  </widget>
+ </widget>
+ <layoutdefault spacing="6" margin="11"/>
+ <resources/>
+ <connections/>
+</ui>
diff --git a/UI/Reconstruction.ui b/UI/Reconstruction.ui
index a4bb1f1..f9b92ab 100644
--- a/UI/Reconstruction.ui
+++ b/UI/Reconstruction.ui
@@ -7,7 +7,7 @@
     <x>0</x>
     <y>0</y>
     <width>1111</width>
-    <height>604</height>
+    <height>601</height>
    </rect>
   </property>
   <property name="windowTitle">
@@ -33,11 +33,11 @@
       <x>249</x>
       <y>-1</y>
       <width>851</width>
-      <height>551</height>
+      <height>531</height>
      </rect>
     </property>
     <property name="currentIndex">
-     <number>2</number>
+     <number>0</number>
     </property>
     <widget class="QWidget" name="page">
      <widget class="QLabel" name="label_2">