diff --git a/STEP3.md b/STEP3.md
new file mode 100644
index 0000000000..7686fe5f1a
--- /dev/null
+++ b/STEP3.md
@@ -0,0 +1,23 @@
+## STEP3 기능 요구사항
+* 사다리 실행 결과를 출력해야 한다.
+* 개인별 이름을 입력하면 개인별 결과를 출력하고, "all"을 입력하면 전체 참여자의 실행 결과를 출력한다.
+
+## 프로그래밍 요구사항
+자바 8의 스트림과 람다를 적용해 프로그래밍한다.
+규칙 6: 모든 엔티티를 작게 유지한다.
+규칙 7: 3개 이상의 인스턴스 변수를 가진 클래스를 쓰지 않는다. (= 2개까지만 허용)
+
+## STEP2 보완사항
+* [X] Ladder 생성, List<Boolean> -> 이전상태와 현재상태를 가지고 있는 객체 
+
+## Step3 기능분해
+* [X] 실행 결과를 입력할 수 있다.
+  * [X] 참가자보다 적게 입력하는 경우 Exception 발생
+* [X] 참가자는 현재 위치를 가지고 있는다.
+* [X] 참가자가 여러명인 경우 자동으로 현재 위치를 가지고 있는다.
+* [X] 참가자가 위치한 라인의 이전상태가 true면 뒤로 이동한다.
+  * [X] 제일 왼쪽에 위치한 참가자가 한칸 더 왼쪽으로 이동하는 경우 Exception 발생
+* [X] 참가자가 위치한 라인의 현재상태가 true면 앞으로 이동한다.
+  * [X] 제일 오른쪽에 위치한 참가자가 한칸 더 오른쪽으로 이동하는 경우 Exception 발생
+* [X] 특정 참가자의 이름을 입력하는 경우 현재 위치의 실행결과를 보여준다.
+* [X] 전체 결과를 보는 경우 각 참가자의 모든 실행결과를 보여준다.
\ No newline at end of file
diff --git a/src/main/java/nextstep/ladder/domain/Ladder.java b/src/main/java/nextstep/ladder/domain/Ladder.java
index 0d80c55f8e..a22827501d 100644
--- a/src/main/java/nextstep/ladder/domain/Ladder.java
+++ b/src/main/java/nextstep/ladder/domain/Ladder.java
@@ -35,6 +35,10 @@ public List<Line> getLines() {
         return lines;
     }
 
+    public Line getLineByHeight(int height) {
+        return lines.get(height);
+    }
+
     @Override
     public String toString() {
         return "Ladder{" +
diff --git a/src/main/java/nextstep/ladder/domain/Line.java b/src/main/java/nextstep/ladder/domain/Line.java
index 4732bee05e..9a6181df6f 100644
--- a/src/main/java/nextstep/ladder/domain/Line.java
+++ b/src/main/java/nextstep/ladder/domain/Line.java
@@ -1,60 +1,37 @@
 package nextstep.ladder.domain;
 
-import nextstep.ladder.utils.RandomLineGenerator;
-
 import java.util.ArrayList;
 import java.util.List;
-import java.util.stream.IntStream;
 
 public class Line {
-    private final List<Boolean> points;
+    private final ArrayList<LineState> points;
 
     public Line(int countOfParticipant) {
         this(generateRandomLine(countOfParticipant));
-        checkForConsecutiveTrues(this.getPoints());
-    }
-
-    public Line(int countOfParticipant, LineGenerator lineGenerator) {
-        this(generateRandomLine(countOfParticipant, lineGenerator));
-        checkForConsecutiveTrues(this.getPoints());
     }
 
-    private static ArrayList<Boolean> generateRandomLine(int countOfParticipant) {
-        LineGenerator lineGenerator = new RandomLineGenerator();
-        ArrayList<Boolean> line = new ArrayList<>();
-        line.add(false); // 사다리 라인의 맨 왼쪽은 생성될 수 없다.
+    private static ArrayList<LineState> generateRandomLine(int countOfParticipant) {
+        ArrayList<LineState> line = new ArrayList<>();
+        LineState firstPoint = new LineState(false, false); // 사다리 라인의 맨 왼쪽은 생성될 수 없다.
+        line.add(firstPoint);
         for (int i = 1; i < countOfParticipant; i++) {
-            boolean shouldGenerateLine = !line.get(i - 1) && lineGenerator.generateLine();
-            line.add(shouldGenerateLine);
+            LineState point = LineState.previousOf(line.get(i-1).getCurrent());
+            line.add(point);
         }
         return line;
     }
 
-    private static ArrayList<Boolean> generateRandomLine(int countOfParticipant, LineGenerator lineGenerator) {
-        ArrayList<Boolean> line = new ArrayList<>();
-        line.add(false); // 사다리 라인의 맨 왼쪽은 생성될 수 없다.
-        for (int i = 1; i < countOfParticipant; i++) {
-            boolean shouldGenerateLine = lineGenerator.generateLine();
-            line.add(shouldGenerateLine);
-        }
-        return line;
+    public Line(ArrayList<LineState> points) {
+        this.points = points;
     }
 
-    private static void checkForConsecutiveTrues(List<Boolean> points) {
-        IntStream.range(0, points.size() - 1)
-                .filter(i -> points.get(i) && points.get(i + 1))
-                .findFirst()
-                .ifPresent(i -> {
-                    throw new IllegalArgumentException("사다리 라인은 연속으로 겹칠 수 없습니다.");
-                });
+    public List<LineState> getPoints() {
+        return points;
     }
 
-    public Line(List<Boolean> points) {
-        this.points = points;
-    }
 
-    public List<Boolean> getPoints() {
-        return points;
+    public LineState getPointsByIndex(int index) {
+        return points.get(index);
     }
 
     @Override
diff --git a/src/main/java/nextstep/ladder/domain/LineState.java b/src/main/java/nextstep/ladder/domain/LineState.java
new file mode 100644
index 0000000000..044287a619
--- /dev/null
+++ b/src/main/java/nextstep/ladder/domain/LineState.java
@@ -0,0 +1,46 @@
+package nextstep.ladder.domain;
+
+import nextstep.ladder.utils.RandomLineGenerator;
+
+public class LineState {
+    private final boolean previous;
+    private final boolean current;
+
+
+    public static LineState previousOf(boolean previous) {
+        LineGenerator lineGenerator = new RandomLineGenerator();
+        return new LineState(previous, !previous && lineGenerator.generateLine());
+    }
+
+    public static LineState previousOf(boolean previous, LineGenerator lineGenerator) {
+        return new LineState(previous, lineGenerator.generateLine());
+    }
+
+    public LineState(boolean previous, boolean current) {
+        checkForConsecutiveTrue(previous, current);
+        this.previous = previous;
+        this.current = current;
+    }
+
+    public boolean getPrevious() {
+        return previous;
+    }
+
+    public boolean getCurrent() {
+        return current;
+    }
+
+    private void checkForConsecutiveTrue(boolean previous, boolean current) {
+        if (previous && current) {
+            throw new IllegalArgumentException("사다리 라인은 연속으로 겹칠 수 없습니다.");
+        }
+    }
+
+    @Override
+    public String toString() {
+        return "LineState{" +
+                "previous=" + previous +
+                ", current=" + current +
+                '}';
+    }
+}
diff --git a/src/main/java/nextstep/ladder/domain/Participant.java b/src/main/java/nextstep/ladder/domain/Participant.java
index 3f6f3341a7..4bd7a80f60 100644
--- a/src/main/java/nextstep/ladder/domain/Participant.java
+++ b/src/main/java/nextstep/ladder/domain/Participant.java
@@ -1,21 +1,24 @@
 package nextstep.ladder.domain;
 
+import nextstep.ladder.exception.CanNotMoveException;
 import nextstep.ladder.exception.CannotRegisterNameException;
 
 public class Participant {
 
     public static final int MIN_NAME_LENGTH = 1;
     public static final int MAX_NAME_LENGTH = 5;
-    private String name;
+    private final String name;
+    private int position;
 
 
-    public static Participant nameOf(String name) {
+    public static Participant nameOf(String name, int position) {
         validateNameLength(name.trim());
-        return new Participant(name.trim());
+        return new Participant(name.trim(), position);
     }
 
-    private Participant(String name) {
+    private Participant(String name, int position) {
         this.name = name;
+        this.position = position;
     }
 
     private static void validateNameLength(String name) {
@@ -27,14 +30,41 @@ private static void validateNameLength(String name) {
         }
     }
 
+    public void moveFront(int participantCount) {
+        canMoveFront(participantCount);
+        this.position++;
+    }
+
+    private void canMoveFront(int participantCount) {
+        if (position == participantCount - 1) {
+            throw new CanNotMoveException("제일 오른쪽에 위치해, 더 이상 오른쪽으로 이동할 수 없습니다.");
+        }
+    }
+
+    public void moveBack() {
+        canMoveBack();
+        this.position--;
+    }
+
+    private void canMoveBack() {
+        if (this.position == 0) {
+            throw new CanNotMoveException("제일 왼쪽에 위치해, 더 이상 왼쪽으로 이동할 수 없습니다.");
+        }
+    }
+
     public String getName() {
         return name;
     }
 
+    public int getPosition() {
+        return position;
+    }
+
     @Override
     public String toString() {
         return "Participant{" +
                 "name='" + name + '\'' +
+                ", position=" + position +
                 '}';
     }
 }
diff --git a/src/main/java/nextstep/ladder/domain/Participants.java b/src/main/java/nextstep/ladder/domain/Participants.java
index 8d647ddeec..26efe1f38a 100644
--- a/src/main/java/nextstep/ladder/domain/Participants.java
+++ b/src/main/java/nextstep/ladder/domain/Participants.java
@@ -1,22 +1,42 @@
 package nextstep.ladder.domain;
 
+import nextstep.ladder.exception.NotFoundException;
+
 import java.util.Arrays;
 import java.util.Collections;
 import java.util.List;
+import java.util.concurrent.atomic.AtomicInteger;
 import java.util.stream.Collectors;
 
 public class Participants {
     private final List<Participant> players;
+    private static final AtomicInteger sequence = new AtomicInteger(0);
 
     public Participants(String names) {
         this(Arrays.stream(names.split(","))
-                .map(Participant::nameOf).collect(Collectors.toList()));
+                .map(name -> Participant.nameOf(name, sequence.getAndIncrement())).collect(Collectors.toList()));
     }
 
     public Participants(List<Participant> players) {
         this.players = players;
     }
 
+    public Participant getParticipantByName(String inputName) {
+        return validateInputName(inputName);
+    }
+
+    private Participant validateInputName(String inputName) {
+        return players.stream().filter(participant -> participant.getName().equals(inputName.trim()))
+                .findAny()
+                .orElseThrow(() -> new NotFoundException("입력하신 이름과 일치하는 참가자가 없습니다."));
+    }
+
+    public Participant getParticipantByPosition(int position) {
+        return players.stream()
+                .filter(player -> player.getPosition() == position)
+                .findAny().orElseThrow(() -> new NotFoundException("해당하는 위치의 참가자가 없습니다."));
+    }
+
     public List<Participant> getParticipants() {
         return Collections.unmodifiableList(players);
     }
diff --git a/src/main/java/nextstep/ladder/domain/ResultInfo.java b/src/main/java/nextstep/ladder/domain/ResultInfo.java
new file mode 100644
index 0000000000..d11cd3e655
--- /dev/null
+++ b/src/main/java/nextstep/ladder/domain/ResultInfo.java
@@ -0,0 +1,38 @@
+package nextstep.ladder.domain;
+
+import java.util.Arrays;
+import java.util.List;
+import java.util.stream.Collectors;
+
+public class ResultInfo {
+
+    private final List<String> results;
+
+    public ResultInfo(String result, int participantCount) {
+        this(checkResultSize(Arrays.stream(result.split(",")).collect(Collectors.toList()), participantCount));
+
+    }
+
+    private static List<String> checkResultSize(List<String> result, int participantCount) {
+        checkResultAndParticipantCount(result, participantCount);
+        return result;
+    }
+
+    public ResultInfo(List<String> results) {
+        this.results = results;
+    }
+
+    private static void checkResultAndParticipantCount(List<String> result, int participantCount) {
+        if (result.size() != participantCount) {
+            throw new IllegalArgumentException("결과 갯수와 참가자 수와 다릅니다.");
+        }
+    }
+
+    public List<String> getResults() {
+        return results;
+    }
+
+    public String getResult(int position) {
+        return results.get(position);
+    }
+}
diff --git a/src/main/java/nextstep/ladder/exception/CanNotMoveException.java b/src/main/java/nextstep/ladder/exception/CanNotMoveException.java
new file mode 100644
index 0000000000..bb16cb80f5
--- /dev/null
+++ b/src/main/java/nextstep/ladder/exception/CanNotMoveException.java
@@ -0,0 +1,7 @@
+package nextstep.ladder.exception;
+
+public class CanNotMoveException extends RuntimeException{
+    public CanNotMoveException(String message) {
+        super(message);
+    }
+}
diff --git a/src/main/java/nextstep/ladder/exception/NotFoundException.java b/src/main/java/nextstep/ladder/exception/NotFoundException.java
new file mode 100644
index 0000000000..a9be4a2f1b
--- /dev/null
+++ b/src/main/java/nextstep/ladder/exception/NotFoundException.java
@@ -0,0 +1,7 @@
+package nextstep.ladder.exception;
+
+public class NotFoundException extends RuntimeException{
+    public NotFoundException(String message) {
+        super(message);
+    }
+}
diff --git a/src/main/java/nextstep/ladder/service/LadderGameHandler.java b/src/main/java/nextstep/ladder/service/LadderGameHandler.java
index 643c4bf115..6d8ef65065 100644
--- a/src/main/java/nextstep/ladder/service/LadderGameHandler.java
+++ b/src/main/java/nextstep/ladder/service/LadderGameHandler.java
@@ -1,8 +1,6 @@
 package nextstep.ladder.service;
 
-import nextstep.ladder.domain.Ladder;
-import nextstep.ladder.domain.LadderInfo;
-import nextstep.ladder.domain.Participants;
+import nextstep.ladder.domain.*;
 import nextstep.ladder.view.InputView;
 import nextstep.ladder.view.ResultView;
 
@@ -13,17 +11,56 @@ private LadderGameHandler() { // 인스턴스화 방지
 
     public static void runGame() {
         Participants participants = inputAndRegisterParticipant();
-        ResultView.enter();
-
+        ResultInfo resultInfo = inputGameResultInfo(participants.count());
         Ladder ladder = drawLadder(participants);
 
-        printLadder(participants, ladder);
+        moveParticipants(participants, ladder);
+
+        printLadder(participants, ladder, resultInfo);
+        printResult(participants, resultInfo);
+    }
+
+    private static void moveParticipants(Participants participants, Ladder ladder) {
+        for (int i = 0; i < ladder.getHeight(); i++) {
+            Line lineByHeight = ladder.getLineByHeight(i);
+            moveParticipantsOnLadder(participants, lineByHeight);
+        }
+    }
+
+    private static void moveParticipantsOnLadder(Participants participants, Line line) {
+        for (int i = 0; i < participants.count(); i++) {
+            if (line.getPointsByIndex(i).getCurrent()) {
+                Participant currentParticipant = participants.getParticipantByPosition(i);
+                currentParticipant.moveBack();
+                Participant previousParticipant = participants.getParticipantByPosition(i - 1);
+                previousParticipant.moveFront(participants.count());
+            }
+        }
     }
 
-    private static void printLadder(Participants participants, Ladder ladder) {
-        ResultView.printResultWord();
+    private static void printResult(Participants participants, ResultInfo resultInfo) {
+        while (true) {
+            String inputName = InputView.inputForParticipantResult();
+            if (inputName.trim().equals("all")) {
+                ResultView.printResultAll(participants, resultInfo);
+                return;
+            }
+            Participant participant = participants.getParticipantByName(inputName);
+            ResultView.printResultOfParticipant(resultInfo.getResult(participant.getPosition()));
+        }
+    }
+
+    private static ResultInfo inputGameResultInfo(int participantCount) {
+        String gameResults = InputView.inputGameResult();
+        ResultView.enter();
+        return new ResultInfo(gameResults, participantCount);
+    }
+
+    private static void printLadder(Participants participants, Ladder ladder, ResultInfo resultInfo) {
+        ResultView.printLadderWord();
         ResultView.printParticipantsName(participants);
         ResultView.printLadder(ladder);
+        ResultView.printResultInfo(resultInfo);
     }
 
     private static Ladder drawLadder(Participants participants) {
@@ -36,6 +73,7 @@ private static Ladder drawLadder(Participants participants) {
 
     private static Participants inputAndRegisterParticipant() {
         String inputParticipantName = InputView.inputParticipantName();
+        ResultView.enter();
         return new Participants(inputParticipantName);
     }
 }
diff --git a/src/main/java/nextstep/ladder/view/InputView.java b/src/main/java/nextstep/ladder/view/InputView.java
index 6659a7341c..b0c5347bcb 100644
--- a/src/main/java/nextstep/ladder/view/InputView.java
+++ b/src/main/java/nextstep/ladder/view/InputView.java
@@ -9,7 +9,12 @@ private InputView() { // 인스턴스화 방지
     }
 
     public static String inputParticipantName() {
-        System.out.println("참여할 사람 이름을 입력하세요. (이름은 쉼표(,)로 구분하세요)");
+        System.out.println("참여할 사람 이름을 입력하세요. (이름은 쉼표(,)로 구분하세요.)");
+        return scanner.nextLine();
+    }
+
+    public static String inputGameResult() {
+        System.out.println("실행 결과를 입력하세요. (결과는 쉼표(,)로 구분하세요.)");
         return scanner.nextLine();
     }
 
@@ -17,4 +22,10 @@ public static int inputLadderHeight() {
         System.out.println("최대 사다리 높이는 몇 개인가요?");
         return scanner.nextInt();
     }
+
+    public static String inputForParticipantResult() {
+        System.out.println("결과를 보고 싶은 사람은?");
+        scanner.nextLine();
+        return scanner.next();
+    }
 }
diff --git a/src/main/java/nextstep/ladder/view/ResultView.java b/src/main/java/nextstep/ladder/view/ResultView.java
index 65a7775d5c..42f0dab2d0 100644
--- a/src/main/java/nextstep/ladder/view/ResultView.java
+++ b/src/main/java/nextstep/ladder/view/ResultView.java
@@ -1,8 +1,6 @@
 package nextstep.ladder.view;
 
-import nextstep.ladder.domain.Ladder;
-import nextstep.ladder.domain.Line;
-import nextstep.ladder.domain.Participants;
+import nextstep.ladder.domain.*;
 
 public class ResultView {
 
@@ -13,14 +11,13 @@ public class ResultView {
     private ResultView() { // 인스턴스화 방지
     }
 
-    public static void printResultWord() {
-        System.out.println("실행결과");
-        System.out.println();
-    }
-
     public static void printParticipantsName(Participants participants) {
         participants.getParticipants().forEach(participant -> System.out.print(String.format("%-8s", participant.getName())));
-        System.out.println();
+        enter();
+    }
+    public static void printLadderWord() {
+        System.out.println("사다리 결과");
+        enter();
     }
 
     public static void printLadder(Ladder ladder) {
@@ -32,7 +29,7 @@ public static void printLadder(Ladder ladder) {
 
     private static void printPoints(Line line) {
         line.getPoints().forEach(point -> {
-            System.out.print(point ? LINE : BLANK);
+            System.out.print(point.getCurrent() ? LINE : BLANK);
             System.out.print(COLUMN);
         });
     }
@@ -40,4 +37,32 @@ private static void printPoints(Line line) {
     public static void enter() {
         System.out.println();
     }
+
+    public static void printResultWord() {
+        System.out.println("실행결과");
+    }
+
+    public static void printResultInfo(ResultInfo resultInfo) {
+        resultInfo.getResults().forEach(result -> System.out.print(String.format("%-8s", result)));
+        enter();
+        enter();
+    }
+
+    public static void printResultAll(Participants participants, ResultInfo resultInfo) {
+        enter();
+        printResultWord();
+        for (int i = 0; i < participants.count(); i++) {
+            Participant participant = participants.getParticipants().get(i);
+            System.out.println(participant.getName()
+                    + " : " + resultInfo.getResults().get(participant.getPosition()));
+        }
+        enter();
+    }
+
+    public static void printResultOfParticipant(String result) {
+        enter();
+        printResultWord();
+        System.out.println(result);
+        enter();
+    }
 }
diff --git a/src/test/java/nextstep/ladder/domain/LineTest.java b/src/test/java/nextstep/ladder/domain/LineTest.java
index 8a4a61b2d6..47105d33d0 100644
--- a/src/test/java/nextstep/ladder/domain/LineTest.java
+++ b/src/test/java/nextstep/ladder/domain/LineTest.java
@@ -16,6 +16,6 @@ public boolean generateLine() {
             }
         };
 
-        assertThrows(IllegalArgumentException.class, () -> new Line (3, lineGenerator));
+        assertThrows(IllegalArgumentException.class, () -> LineState.previousOf(true , lineGenerator));
     }
 }
diff --git a/src/test/java/nextstep/ladder/domain/ParticipantTest.java b/src/test/java/nextstep/ladder/domain/ParticipantTest.java
index e700771096..bc4bf60fb7 100644
--- a/src/test/java/nextstep/ladder/domain/ParticipantTest.java
+++ b/src/test/java/nextstep/ladder/domain/ParticipantTest.java
@@ -1,29 +1,69 @@
 package nextstep.ladder.domain;
 
+import nextstep.ladder.exception.CanNotMoveException;
 import nextstep.ladder.exception.CannotRegisterNameException;
 import org.junit.jupiter.api.DisplayName;
 import org.junit.jupiter.api.Test;
 
+import static org.assertj.core.api.AssertionsForClassTypes.assertThat;
 import static org.junit.jupiter.api.Assertions.assertDoesNotThrow;
 import static org.junit.jupiter.api.Assertions.assertThrows;
 
 public class ParticipantTest {
     @Test
-    @DisplayName("참가자의 이름이 5글자를 초과하는 경우 Exception Throw")
+    @DisplayName("참가자의 이름이 5글자를 초과하는 경우 Exception 밝생")
     void participantName_5글자초과_Test() {
         String name = "hvoiunq";
-        assertThrows(CannotRegisterNameException.class, () -> Participant.nameOf(name));
+        assertThrows(CannotRegisterNameException.class, () -> Participant.nameOf(name, 0));
     }
     @Test
-    @DisplayName("참가자의 이름이 1글자 미만인 경우 Exception Throw")
+    @DisplayName("참가자의 이름이 1글자 미만인 경우 Exception 발생")
     void participantName_1글자미만_Test() {
         String name = " ";
-        assertThrows(CannotRegisterNameException.class, () -> Participant.nameOf(name));
+        assertThrows(CannotRegisterNameException.class, () -> Participant.nameOf(name, 0));
     }
     @Test
     @DisplayName("참가자의 이름이 1글자~5글자인 경우 정상")
     void participantNameTest() {
         String name = "hvo";
-        assertDoesNotThrow(() -> Participant.nameOf(name));
+        assertDoesNotThrow(() -> Participant.nameOf(name, 0));
+    }
+
+    @Test
+    @DisplayName("참가자는 현재 위치를 가질 수 있다.")
+    void ParticipantPositionTest() {
+        Participant participant = Participant.nameOf("test", 1);
+        assertThat(participant.getPosition()).isEqualTo(1);
+    }
+
+    @Test
+    @DisplayName("참가자는 오른쪽으로 이동할 수 있다.")
+    void moveFrontTest() {
+        Participant participant = Participant.nameOf("test", 1);
+        participant.moveFront(1);
+
+        assertThat(participant.getPosition()).isEqualTo(2);
+    }
+    @Test
+    @DisplayName("제일 왼쪽에 위치한 참가자가 한칸 더 왼쪽으로 이동하는 경우 Exception 발생")
+    void canNotMoveFrontTest() {
+        Participants participants = new Participants("a,b");
+
+        assertThrows(CanNotMoveException.class, () -> participants.getParticipantByName("b").moveFront(participants.count()));
+    }
+    @Test
+    @DisplayName("참가자는 왼쪽으로 이동할 수 있다.")
+    void moveBackTest() {
+        Participant participant = Participant.nameOf("test", 1);
+        participant.moveBack();
+
+        assertThat(participant.getPosition()).isEqualTo(0);
+    }
+    @Test
+    @DisplayName("제일 왼쪽에 위치한 참가자가 한칸 더 왼쪽으로 이동하는 경우 Exception 발생")
+    void canNotMoveBackTest() {
+        Participant participant = Participant.nameOf("test", 0);
+
+        assertThrows(CanNotMoveException.class, () -> participant.moveBack());
     }
 }
diff --git a/src/test/java/nextstep/ladder/domain/ParticipantsTest.java b/src/test/java/nextstep/ladder/domain/ParticipantsTest.java
new file mode 100644
index 0000000000..90f00e1c89
--- /dev/null
+++ b/src/test/java/nextstep/ladder/domain/ParticipantsTest.java
@@ -0,0 +1,26 @@
+package nextstep.ladder.domain;
+
+import nextstep.ladder.exception.NotFoundException;
+import org.junit.jupiter.api.DisplayName;
+import org.junit.jupiter.api.Test;
+
+import static org.assertj.core.api.AssertionsForClassTypes.assertThat;
+import static org.junit.jupiter.api.Assertions.assertThrows;
+
+public class ParticipantsTest {
+    @Test
+    @DisplayName("참가자가 여러명인 경우 자동으로 현재 위치를 가지고 있는다.")
+    void participantsPositionTest() {
+        Participants participants = new Participants("a,b");
+        assertThat(participants.getParticipants().get(0).getPosition()).isEqualTo(1);
+        assertThat(participants.getParticipants().get(1).getPosition()).isEqualTo(2);
+    }
+
+    @Test
+    @DisplayName("참가자 명단에 없는 이름을 입력하는 경우 Exception 발생")
+    void wrongInputParticipantName() {
+        Participants participants = new Participants("a,b");
+        assertThrows(NotFoundException.class, () -> participants.getParticipantByName("c"));
+    }
+
+}
diff --git a/src/test/java/nextstep/ladder/domain/ResultInfoTest.java b/src/test/java/nextstep/ladder/domain/ResultInfoTest.java
new file mode 100644
index 0000000000..06f6439a16
--- /dev/null
+++ b/src/test/java/nextstep/ladder/domain/ResultInfoTest.java
@@ -0,0 +1,25 @@
+package nextstep.ladder.domain;
+
+import org.junit.jupiter.api.DisplayName;
+import org.junit.jupiter.api.Test;
+
+import static org.assertj.core.api.AssertionsForClassTypes.assertThat;
+import static org.junit.jupiter.api.Assertions.assertThrows;
+
+public class ResultInfoTest {
+    @Test
+    @DisplayName("실행 결과를 입력할 수 있다.")
+    void saveResultInfoTest() {
+        ResultInfo resultInfo = new ResultInfo("a,b", 2);
+
+        assertThat(resultInfo.getResults().size()).isEqualTo(2);
+    }
+
+    @Test
+    @DisplayName("참가자보다 적게 입력하는 경우 Exception 발생")
+    void wrongResultInfoExceptionTest() {
+        Participants participants = new Participants("a,b");
+
+        assertThrows(IllegalArgumentException.class, () -> new ResultInfo("a", participants.count()));
+    }
+}