diff --git a/src/main/java/baseball/Application.java b/src/main/java/baseball/Application.java
index dd95a34214..ce723b4a39 100644
--- a/src/main/java/baseball/Application.java
+++ b/src/main/java/baseball/Application.java
@@ -2,6 +2,7 @@
 
 public class Application {
     public static void main(String[] args) {
-        // TODO: 프로그램 구현
+        Game game = new Game();
+        game.start();
     }
 }
diff --git a/src/main/java/baseball/Computer.java b/src/main/java/baseball/Computer.java
new file mode 100644
index 0000000000..d51593a867
--- /dev/null
+++ b/src/main/java/baseball/Computer.java
@@ -0,0 +1,22 @@
+package baseball;
+
+import camp.nextstep.edu.missionutils.Randoms;
+
+import java.util.ArrayList;
+import java.util.List;
+
+public class Computer {
+    private List<Integer> ComputerNumbers;
+    public void Random(){
+        ComputerNumbers = new ArrayList<>();
+        while(ComputerNumbers.size() < 3){
+            int randomNumber = Randoms.pickNumberInRange(1,9);
+            if(!ComputerNumbers.contains(randomNumber)){
+                ComputerNumbers.add(randomNumber);
+            }
+        }
+    }
+    public List<Integer> getCom(){
+        return ComputerNumbers;
+    }
+}
diff --git a/src/main/java/baseball/Game.java b/src/main/java/baseball/Game.java
new file mode 100644
index 0000000000..c72cfcddf3
--- /dev/null
+++ b/src/main/java/baseball/Game.java
@@ -0,0 +1,42 @@
+package baseball;
+
+public class Game {
+    private Computer computer;
+    private Input input;
+    private Go go;
+    public Game(){
+        this.computer = new Computer();
+        this.input = new Input();
+        this.go = new Go();
+    }
+    public void newGame(){
+        while(true){
+            System.out.println("숫자를 입력해주세요 : ");
+            int[] player = input.getInput();
+            String result = go.Check(computer.getCom(), player);
+            System.out.println(result);
+
+            if(result.equals("3스트라이크")){
+                break;
+            }
+        }
+    }
+    public void start(){
+        while(true){
+            System.out.println("숫자 야구 게임을 시작합니다.");
+            computer.Random();
+
+            newGame();
+
+            System.out.println("3개의 숫자를 모두 맞히셨습니다! 게임 종료");
+            System.out.println("게임을 새로 시작하려면 1, 종료하려면 2를 입력하세요.");
+            String next = input.getUserInput();
+            if (next.equals("2")) {
+                break;
+            }
+            else if(!next.equals("1")){
+                continue;
+            }
+        }
+    }
+}
diff --git a/src/main/java/baseball/Go.java b/src/main/java/baseball/Go.java
new file mode 100644
index 0000000000..2b0fdde6c7
--- /dev/null
+++ b/src/main/java/baseball/Go.java
@@ -0,0 +1,34 @@
+package baseball;
+
+import java.util.List;
+
+public class Go {
+    public String Check(List<Integer> computer, int[] input){
+        int strike = 0;
+        int ball = 0;
+        for(int i = 0; i < 3; i++){
+            for(int j = 0; j < 3; j++){
+                if(computer.get(i).equals(input[j])){
+                    if(i == j){
+                        strike++;
+                    }
+                    else{
+                        ball++;
+                    }
+                }
+            }
+        }
+        if(ball == 0 && strike == 0){
+            return "낫싱";
+        }
+        else if(strike == 0){
+            return ball + "볼";
+        }
+        else if(ball == 0){
+            return strike + "스트라이크";
+        }
+        else{
+            return ball + "볼 " + strike + "스트라이크";
+        }
+    }
+}
diff --git a/src/main/java/baseball/Input.java b/src/main/java/baseball/Input.java
new file mode 100644
index 0000000000..bd6fae9a52
--- /dev/null
+++ b/src/main/java/baseball/Input.java
@@ -0,0 +1,21 @@
+package baseball;
+
+import camp.nextstep.edu.missionutils.Console;
+
+public class Input {
+    private int[] in = new int[3];
+    public String getUserInput(){
+        return Console.readLine();
+    }
+    public int[] getInput(){
+        String input = getUserInput();
+        int a = Integer.parseInt(input);
+        if(a < 0 || a > 999){
+            throw new IllegalArgumentException();
+        }
+        for(int i = 0; i < 3; i++){
+            in[i] = input.charAt(i)-'0';
+        }
+        return in;
+    }
+}