diff --git a/src/Gui.java b/src/Gui.java
new file mode 100644
index 0000000000000000000000000000000000000000..7201dcf78877c3ed22f2dbe47c8579bf0bca3461
--- /dev/null
+++ b/src/Gui.java
@@ -0,0 +1,115 @@
+import javax.swing.*;
+import java.awt.*;
+import java.awt.event.*;
+public class Gui extends JFrame implements ActionListener{
+	//界面北部
+	JPanel jPanel_N=new JPanel();
+	JTextField field=new JTextField();
+	JButton button_C=new JButton("C");
+	
+	//界面中部
+	JPanel jPanel_C=new JPanel();
+	
+	JFrame calculator;
+	public Gui(String name){
+		//设置窗口基本属性
+		calculator=new JFrame("name");
+		calculator.setVisible(true);
+		calculator.setSize(GuiConstant.width,GuiConstant.height);
+		calculator.setLocation(GuiConstant.x,GuiConstant.y);
+		calculator.setResizable(false);
+		//calculator.setBackground(new Color(0,0,0));
+		calculator.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
+		
+		//布置各部分界面
+		this.Gui_North();
+		this.Gui_Center();
+	}
+	
+	//布置界面北部
+	public void Gui_North(){
+		calculator.add(jPanel_N,BorderLayout.NORTH);
+		jPanel_N.add(field);
+		this.field.setPreferredSize(new Dimension(300,40));//输入框
+		jPanel_N.add(button_C);
+		this.button_C.setForeground(Color.RED);//归零键	
+		button_C.addActionListener(
+			new ActionListener(){
+				public void actionPerformed(ActionEvent e){
+					field.setText("");
+				}
+			}
+		);
+	}
+	
+	//布置界面中部
+	public void Gui_Center(){
+		String button_text[]={"7","8","9","+",
+							"4","5","6","-",
+							"1","2","3","*",
+							".","0","=","/"};
+		calculator.add(jPanel_C,BorderLayout.CENTER);
+		this.jPanel_C.setLayout(new GridLayout(4,4));
+		for(int i=0;i<16;i++){
+			JButton button=new JButton();
+			jPanel_C.add(button);
+			button.setText(button_text[i]);
+			button.addActionListener(this);
+			if((i+1)%4==0){
+				button.setForeground(Color.BLUE);
+				button.setFont(new Font("粗体",Font.BOLD,25));
+			}
+			else if(i==12||i==14){
+				button.setForeground(Color.RED);
+				button.setFont(new Font("粗体",Font.BOLD,25));
+			}
+			else{
+				button.setFont(new Font("粗体",Font.BOLD,20));
+			}
+		}
+	}
+	
+	//事件处理
+	String operator=null;
+	String number_str1=null;
+	public void actionPerformed(ActionEvent event){
+		String str=event.getActionCommand();
+		int flag=0;
+		if(".0123456789".indexOf(str)!=-1){
+			this.field.setText(field.getText()+str);
+			this.field.setHorizontalAlignment(JTextField.RIGHT);
+			//JOptionPane.showMessageDialog(this,str);
+		}
+		else if(str.matches("[\\+\\-*/]{1}")){
+			operator=str;
+			number_str1=this.field.getText();
+			this.field.setText("");
+		}
+		else if(str.equals("=")){
+			Double number_1=Double.valueOf(number_str1);
+			Double number_2=Double.valueOf(this.field.getText());
+			Double result=null;
+			switch(operator){
+				case "+":result=number_1+number_2;
+				break;
+				case "-":result=number_1-number_2;
+				break;
+				case "*":result=number_1*number_2;
+				break;
+				case "/":if(number_2!=0){
+							result=number_1/number_2;
+						}
+						else flag=1;
+				break;
+			}
+			if(flag==0){
+				this.field.setText(result.toString());
+			}
+			else {
+				flag=0;
+				this.field.setText("除数不能为0");
+			}
+		}
+	}
+	
+}
\ No newline at end of file
diff --git a/src/GuiConstant.java b/src/GuiConstant.java
new file mode 100644
index 0000000000000000000000000000000000000000..6d7728cb4902543c23fc742ff5db30bd0ba9f125
--- /dev/null
+++ b/src/GuiConstant.java
@@ -0,0 +1,9 @@
+import java.awt.*;
+public class GuiConstant{//设定窗口宽高、使窗口居中
+	public final static int SCREEN_H=Toolkit.getDefaultToolkit().getScreenSize().height;
+	public final static int SCREEN_W=Toolkit.getDefaultToolkit().getScreenSize().width;
+	public final static int height=500;
+	public final static int width=400;
+	public final static int x=(SCREEN_W-width)/2;
+	public final static int y=(SCREEN_H- height)/2;
+}
\ No newline at end of file
diff --git a/src/Main.java b/src/Main.java
new file mode 100644
index 0000000000000000000000000000000000000000..6102ec5846189709591bf86721c24a78b3405ea1
--- /dev/null
+++ b/src/Main.java
@@ -0,0 +1,5 @@
+class Main{
+	public static void main(String args[]){
+		Gui gui=new Gui("不科学计算器");
+	}
+}
\ No newline at end of file