diff --git a/docs/README.md b/docs/README.md
index e69de29bb2..1ffc0e4046 100644
--- a/docs/README.md
+++ b/docs/README.md
@@ -0,0 +1,85 @@
+# ⚾ BaseBall Game
+## 요구 사항 분석
+### 게임 규칙
+>같은 수가 같은 자리에 있으면 Strike
+><br>
+>같은 수가 다른 자리에 있으면 Ball
+><br>
+>같은 수가 하나도 없으면 Nothing
+><br>
+>Strike, Ball, Nothing의 힌트를 가지고 Computer의 수를 맞추면 승리
+><br>
+> 예시)Compuer의 수 : 829일때
+><br>
+> 123을 제시 : 1스트라이크
+> <br>
+> 456을 제시 : 낫싱
+> <br>
+> 189을 제시 : 1볼 1스트라이크
+
+<br>
+
+### 게임 진행 과정
+> 게임 플레이어는 서로 다른 3개의 숫자를 입력하고, 컴퓨터는 입력한 숫자에 대한 결과물 출력
+
+<br>
+
+### 게임 종료 조건
+> 컴퓨터의 숫자 3개를 모두 맞추면 게임 종료
+
+<br>
+
+### 게임 종료 후 처리 방법
+> 게임을 다시 시작하거나 종료
+
+
+
+<br>
+
+### 예외 조건
+1. 입력값이 길이가 3이 초과가 되는지
+2. 입력값이 정수형이 아닌지
+3. 입력값이 서로 다른 수가 아니라 중복되는 수인지
+4. 사용자가 잘못된 값을 입력할 경우 <b>IllegalArgumentException()</b>을 발생시킨 후 애플리케이션 종료
+
+<br>
+
+## 구현 목록
+
+### Controller
+- GameController
+    - 시작 기능
+
+
+
+### Model
+- Game
+    - 컴퓨터 정답 생성
+    - 결과값 생성
+    - 현재 상태 (이겼는지 / 재시작 할건지 / 종료할건지)
+
+- GameResult
+    - 컴퓨터 vs 유저 값 판단하여 스트라이크, 볼 개수 판단
+    - 결과를 string형으로 변환
+
+### View
+- GameView
+    - 출력 인터페이스
+
+### Service
+- CheckUserNumber
+    - 예외 처리 기능 
+      - 입력 길이 3 이상인지
+      - 입력 값이 정수인지
+      - 입력 값이 중복되는지
+
+<br>
+
+## 커밋 방법 [깃 배쉬]
+1. git clone --bare [forked한 레포지 주소]
+2. cd [forked한 레포지 주소]
+3. git push --mirror [새 레포지 주소]
+4. cd ..
+5. rm -rf [forked한 레포지 주소]
+
+<br>
diff --git a/src/main/java/baseball/Application.java b/src/main/java/baseball/Application.java
index dd95a34214..8fb21daf19 100644
--- a/src/main/java/baseball/Application.java
+++ b/src/main/java/baseball/Application.java
@@ -1,7 +1,17 @@
 package baseball;
 
+import baseball.Controller.GameController;
+import baseball.View.GameView;
+import camp.nextstep.edu.missionutils.Console;
+import camp.nextstep.edu.missionutils.Randoms;
+import java.util.Arrays;
+import java.util.HashSet;
+import java.util.Set;
+
 public class Application {
+
     public static void main(String[] args) {
-        // TODO: 프로그램 구현
+        GameController gameController = new GameController();
+        gameController.GameStart();
     }
-}
+}
\ No newline at end of file
diff --git a/src/main/java/baseball/Controller/GameController.java b/src/main/java/baseball/Controller/GameController.java
new file mode 100644
index 0000000000..7175469b29
--- /dev/null
+++ b/src/main/java/baseball/Controller/GameController.java
@@ -0,0 +1,38 @@
+package baseball.Controller;
+
+import baseball.Service.CheckUserNumber;
+import baseball.Model.Game;
+import baseball.View.GameView;
+
+import java.util.List;
+
+public class GameController {
+
+    private final GameView gameView = new GameView();
+
+    public GameController(){
+        gameView.showGameStart();
+    }
+
+    public void GameStart(){
+        Game game = new Game();
+        while(game.gamestatus()){
+            gameView.showInputNumbers();  //숫자를 입력해 주세요:
+            String strInputNumbers = gameView.getInput(); //입력받아 string형에 저장
+            CheckUserNumber check = new CheckUserNumber(strInputNumbers); //오류 검사
+            List<Integer> UserNumbers = game.stringToIntList(strInputNumbers); //console로 입력 받으면 string형 이기 때문에 비교과 쉽게 List로 변환
+
+            String Gameresult = game.makeGameResult(UserNumbers);
+            gameView.showString(Gameresult);
+        }
+        gameView.showGameEnd();
+
+        gameView.showInputRestart();
+        String strInputRestart = gameView.getInput();
+        if (game.isRestart(strInputRestart)) {
+            GameStart();
+        }
+    }
+
+
+}
diff --git a/src/main/java/baseball/Model/Game.java b/src/main/java/baseball/Model/Game.java
new file mode 100644
index 0000000000..001febff6d
--- /dev/null
+++ b/src/main/java/baseball/Model/Game.java
@@ -0,0 +1,67 @@
+package baseball.Model;
+
+import camp.nextstep.edu.missionutils.Randoms;
+
+import java.util.ArrayList;
+import java.util.List;
+
+public class Game {
+
+    private final List<Integer> answerNumbers = new ArrayList<>();
+    private boolean GameStatus;
+    private final boolean Playing = true;
+    private final boolean End = false;
+    private final String RESTART = "1";
+    private final String QUIT = "2";
+    public Game(){
+        this.setAnswerNumbers();
+        this.GameStatus = Playing;
+    }
+
+    public void setAnswerNumbers(){
+        while (this.answerNumbers.size() < 3) {
+            int randomNumber = Randoms.pickNumberInRange(1, 9);
+            if (!this.answerNumbers.contains(randomNumber)) {
+                this.answerNumbers.add(randomNumber);
+            }
+        }
+    }
+
+    public String makeGameResult(List<Integer> inputNumbers) {
+        GameResult gameResult = new GameResult(this.answerNumbers, inputNumbers);
+        applyResult(gameResult.getStrikes());
+        return gameResult.resultToString();
+    }
+
+    public void applyResult(int strike) {
+        if (strike == 3) {
+            this.GameStatus = End;
+        }
+    }
+
+    public boolean gamestatus() {
+        return this.GameStatus;
+    }
+
+
+    public boolean isRestart(String input) {
+        if (input.equals(RESTART)) {
+            return true;
+        } else if (input.equals(QUIT)) {
+            return false;
+        } else {
+            throw new IllegalArgumentException();
+        }
+    }
+
+
+    public List<Integer> stringToIntList(String String) { //입력값을 List로 변경
+        List<Integer> intList = new ArrayList<>();
+        for (int i = 0; i < String.length(); i++) {
+            char digitChar = String.charAt(i);
+            int digitInt = Character.getNumericValue(digitChar);
+            intList.add(digitInt);
+        }
+        return intList;
+    }
+}
diff --git a/src/main/java/baseball/Model/GameResult.java b/src/main/java/baseball/Model/GameResult.java
new file mode 100644
index 0000000000..372ff48a82
--- /dev/null
+++ b/src/main/java/baseball/Model/GameResult.java
@@ -0,0 +1,44 @@
+package baseball.Model;
+
+import java.util.List;
+
+public class GameResult {
+
+    private int ball = 0;
+    private int strike = 0;
+
+    GameResult(List<Integer> answerNumbers, List<Integer> UserNumbers ){
+        for(int i=0; i<answerNumbers.size(); i++){
+            int computer = answerNumbers.get(i);
+            int user = UserNumbers.get(i);
+
+            if(computer == user){
+                this.strike++;
+            }
+            else if(answerNumbers.contains(user)){
+                this.ball++;
+            }
+        }
+    }
+
+    public String resultToString() {
+        String result = "";
+        if (this.ball != 0) {
+            result += this.ball + "볼";
+        }
+        if (this.strike != 0) {
+            if (this.ball != 0) {
+                result += " ";
+            }
+            result += this.strike + "스트라이크";
+        }
+        if (this.ball == 0 && this.strike == 0) {
+            result = "낫싱";
+        }
+        return result;
+    }
+
+    public int getStrikes() {
+        return this.strike;
+    }
+}
diff --git a/src/main/java/baseball/Service/CheckUserNumber.java b/src/main/java/baseball/Service/CheckUserNumber.java
new file mode 100644
index 0000000000..bce08bc45a
--- /dev/null
+++ b/src/main/java/baseball/Service/CheckUserNumber.java
@@ -0,0 +1,38 @@
+package baseball.Service;
+
+import java.util.HashSet;
+import java.util.Set;
+
+public class CheckUserNumber {
+
+    public CheckUserNumber(String String){
+        CheckLength(String);
+        CheckInt(String);
+        CheckDuplicate(String);
+    }
+
+    private void CheckLength(String String){
+        if(String.length() != 3)
+            throw new IllegalArgumentException();
+
+    }
+
+    private void CheckInt(String String){
+        try {
+            int inputInt = Integer.parseInt(String);
+        } catch (NumberFormatException e) {
+            throw new IllegalArgumentException();
+        }
+    }
+
+    private void CheckDuplicate(String String){
+        Set<Character> charSet = new HashSet<>();
+        for (int i = 0; i < String.length(); i++) {
+            char currentChar = String.charAt(i);
+            if (charSet.contains(currentChar)) {
+                throw new IllegalArgumentException();
+            }
+            charSet.add(currentChar);
+        }
+    }
+}
diff --git a/src/main/java/baseball/View/GameView.java b/src/main/java/baseball/View/GameView.java
new file mode 100644
index 0000000000..f36caa01db
--- /dev/null
+++ b/src/main/java/baseball/View/GameView.java
@@ -0,0 +1,34 @@
+package baseball.View;
+
+import camp.nextstep.edu.missionutils.Console;
+
+public class GameView {
+    private final static String GAME_START = "숫자 야구 게임을 시작합니다.";
+    private final static String INPUT_NUMBERS = "숫자를 입력해주세요 : ";
+    private final static String GAME_END = "3개의 숫자를 모두 맞히셨습니다! 게임 종료";
+    private final static String INPUT_RESTART = "게임을 새로 시작하려면 1, 종료하려면 2를 입력하세요.";
+
+    public void showGameStart() {
+        System.out.println(GAME_START);
+    }
+
+    public void showInputNumbers() {
+        System.out.print(INPUT_NUMBERS);
+    }
+
+    public void showGameEnd() {
+        System.out.println(GAME_END);
+    }
+
+    public void showInputRestart() {
+        System.out.println(INPUT_RESTART);
+    }
+
+    public void showString(String string) {
+        System.out.println(string);
+    }
+
+    public String getInput() {
+        return Console.readLine();
+    }
+}
diff --git a/src/test/java/baseball/ApplicationTest.java b/src/test/java/baseball/ApplicationTest.java
index 3fa29fa67b..f9c4121d02 100644
--- a/src/test/java/baseball/ApplicationTest.java
+++ b/src/test/java/baseball/ApplicationTest.java
@@ -7,6 +7,7 @@
 import static camp.nextstep.edu.missionutils.test.Assertions.assertSimpleTest;
 import static org.assertj.core.api.Assertions.assertThat;
 import static org.assertj.core.api.Assertions.assertThatThrownBy;
+import static org.assertj.core.api.Assertions.*;
 
 class ApplicationTest extends NsTest {
     @Test
@@ -32,4 +33,4 @@ class ApplicationTest extends NsTest {
     public void runMain() {
         Application.main(new String[]{});
     }
-}
+}
\ No newline at end of file