diff --git a/src/main/java/com/study/realworld/domain/follow/api/FollowQueryApi.java b/src/main/java/com/study/realworld/domain/follow/api/FollowQueryApi.java
index 8dac65e6..55e1f2f6 100644
--- a/src/main/java/com/study/realworld/domain/follow/api/FollowQueryApi.java
+++ b/src/main/java/com/study/realworld/domain/follow/api/FollowQueryApi.java
@@ -23,7 +23,7 @@ public ResponseEntity<ProfileResponse> profile(@AuthenticationPrincipal final Lo
         return ResponseEntity.ok().body(profile);
     }
 
-    @GetMapping("/profiles2/{username}")
+    @GetMapping("/profiles/querydsl/{username}")
     public ResponseEntity<ProfileResponse> profile2(@AuthenticationPrincipal final Long userId,
                                                    @PathVariable final String username) {
         final ProfileResponse profile = followQueryService.profile2(userId, UserName.from(username));
diff --git a/src/main/java/com/study/realworld/domain/follow/domain/Follow.java b/src/main/java/com/study/realworld/domain/follow/domain/Follow.java
index b8f07aba..a85382ef 100644
--- a/src/main/java/com/study/realworld/domain/follow/domain/Follow.java
+++ b/src/main/java/com/study/realworld/domain/follow/domain/Follow.java
@@ -15,7 +15,7 @@ public class Follow {
     @Id
     @GeneratedValue(strategy = GenerationType.IDENTITY)
     @Column(name = "id", nullable = false, updatable = false)
-    private Long id;
+    private Long followId;
 
     @ManyToOne(fetch = FetchType.LAZY)
     @JoinColumn(name = "followee", nullable = false, foreignKey = @ForeignKey(name = "fk_follow_to_followee"))
@@ -31,8 +31,8 @@ public Follow(final User followee, final User follower) {
         this.follower = follower;
     }
 
-    public Long id() {
-        return id;
+    public Long followId() {
+        return followId;
     }
 
     public User followee() {
@@ -48,11 +48,11 @@ public boolean equals(final Object o) {
         if (this == o) return true;
         if (o == null || getClass() != o.getClass()) return false;
         final Follow follow = (Follow) o;
-        return Objects.equals(id(), follow.id());
+        return Objects.equals(followId(), follow.followId());
     }
 
     @Override
     public int hashCode() {
-        return Objects.hash(id());
+        return Objects.hash(followId());
     }
 }
diff --git a/src/main/java/com/study/realworld/domain/follow/dto/FollowResponse.java b/src/main/java/com/study/realworld/domain/follow/dto/FollowResponse.java
index 15df1c56..d12d02d7 100644
--- a/src/main/java/com/study/realworld/domain/follow/dto/FollowResponse.java
+++ b/src/main/java/com/study/realworld/domain/follow/dto/FollowResponse.java
@@ -15,7 +15,7 @@
 @NoArgsConstructor(access = AccessLevel.PRIVATE)
 @JsonTypeName("profile")
 @JsonTypeInfo(include = JsonTypeInfo.As.WRAPPER_OBJECT, use = JsonTypeInfo.Id.NAME)
-public class FollowResponse {
+public final class FollowResponse {
 
     @JsonProperty("username")
     private UserName userName;
@@ -30,27 +30,27 @@ public class FollowResponse {
     private Boolean followable;
 
 
-    public static FollowResponse from(final User user) {
+    public static final FollowResponse from(final User user) {
         return of(user, true);
     }
 
-    private static FollowResponse of(final User user, final boolean followable) {
+    private static final FollowResponse of(final User user, final boolean followable) {
         return new FollowResponse(user.userName(), user.userBio(), user.userImage(), followable);
     }
 
-    public UserName userName() {
+    public final UserName userName() {
         return userName;
     }
 
-    public UserBio userBio() {
+    public final UserBio userBio() {
         return userBio;
     }
 
-    public UserImage userImage() {
+    public final UserImage userImage() {
         return userImage;
     }
 
-    public Boolean isFollowing() {
+    public final Boolean isFollowing() {
         return followable;
     }
 }
diff --git a/src/main/java/com/study/realworld/domain/follow/dto/UnFollowResponse.java b/src/main/java/com/study/realworld/domain/follow/dto/UnFollowResponse.java
index 0522a765..93e24cc1 100644
--- a/src/main/java/com/study/realworld/domain/follow/dto/UnFollowResponse.java
+++ b/src/main/java/com/study/realworld/domain/follow/dto/UnFollowResponse.java
@@ -15,7 +15,7 @@
 @NoArgsConstructor(access = AccessLevel.PRIVATE)
 @JsonTypeName("profile")
 @JsonTypeInfo(include = JsonTypeInfo.As.WRAPPER_OBJECT, use = JsonTypeInfo.Id.NAME)
-public class UnFollowResponse {
+public final class UnFollowResponse {
 
     @JsonProperty("username")
     private UserName userName;
@@ -29,28 +29,27 @@ public class UnFollowResponse {
     @JsonProperty("following")
     private Boolean followable;
 
-    public static UnFollowResponse from(final User user) {
+    public static final UnFollowResponse from(final User user) {
         return of(user, false);
     }
 
-    private static UnFollowResponse of(final User user, final boolean followable) {
+    private static final UnFollowResponse of(final User user, final boolean followable) {
         return new UnFollowResponse(user.userName(), user.userBio(), user.userImage(), followable);
     }
 
-    public UserName userName() {
+    public final UserName userName() {
         return userName;
     }
 
-    public UserBio userBio() {
+    public final UserBio userBio() {
         return userBio;
     }
 
-    public UserImage userImage() {
+    public final UserImage userImage() {
         return userImage;
     }
 
-    public Boolean isFollowing() {
+    public final Boolean isFollowing() {
         return followable;
     }
 }
-
diff --git a/src/main/java/com/study/realworld/domain/follow/error/FollowErrorCode.java b/src/main/java/com/study/realworld/domain/follow/error/FollowErrorCode.java
index 80b7d649..c511d147 100644
--- a/src/main/java/com/study/realworld/domain/follow/error/FollowErrorCode.java
+++ b/src/main/java/com/study/realworld/domain/follow/error/FollowErrorCode.java
@@ -10,8 +10,8 @@
 
 public enum FollowErrorCode implements ErrorCode {
 
-    FOLLOW_NOT_FOUND(FollowNotFoundException.class, HttpStatus.BAD_REQUEST, "Follow is not exist"),
-    DUPLICATED_FOLLOW(DuplicatedFollowException.class, HttpStatus.BAD_REQUEST, "Follow is already exist");
+    DUPLICATED_FOLLOW(DuplicatedFollowException.class, HttpStatus.BAD_REQUEST, "Follow is already exist"),
+    FOLLOW_NOT_FOUND(FollowNotFoundException.class, HttpStatus.BAD_REQUEST, "Follow is not exist");
 
     private final Class exceptionClass;
     private final HttpStatus httpStatus;
diff --git a/src/main/java/com/study/realworld/domain/user/domain/vo/UserPassword.java b/src/main/java/com/study/realworld/domain/user/domain/vo/UserPassword.java
index 11fc37a2..1b007fac 100644
--- a/src/main/java/com/study/realworld/domain/user/domain/vo/UserPassword.java
+++ b/src/main/java/com/study/realworld/domain/user/domain/vo/UserPassword.java
@@ -2,6 +2,7 @@
 
 import com.fasterxml.jackson.annotation.JsonValue;
 import com.study.realworld.domain.user.error.exception.PasswordMissMatchException;
+import com.study.realworld.domain.user.error.exception.PasswordNullOrEmptyException;
 import lombok.AccessLevel;
 import lombok.AllArgsConstructor;
 import lombok.NoArgsConstructor;
@@ -27,8 +28,8 @@ public static UserPassword encode(final String rawPassword, final PasswordEncode
     }
 
     private static void validateNullOrBlank(final String rawPassword) {
-        if (rawPassword.isBlank()) {
-            throw new IllegalArgumentException();
+        if (Objects.isNull(rawPassword) || rawPassword.isBlank()) {
+            throw new PasswordNullOrEmptyException();
         }
     }
 
diff --git a/src/main/java/com/study/realworld/domain/user/dto/UserInfo.java b/src/main/java/com/study/realworld/domain/user/dto/UserInfo.java
index b9e28029..023e95cc 100644
--- a/src/main/java/com/study/realworld/domain/user/dto/UserInfo.java
+++ b/src/main/java/com/study/realworld/domain/user/dto/UserInfo.java
@@ -17,7 +17,7 @@
 @NoArgsConstructor(access = AccessLevel.PRIVATE)
 @JsonTypeName("user")
 @JsonTypeInfo(include = JsonTypeInfo.As.WRAPPER_OBJECT, use = JsonTypeInfo.Id.NAME)
-public class UserInfo {
+public final class UserInfo {
 
     @JsonProperty("username")
     private UserName userName;
@@ -42,23 +42,23 @@ public static final UserInfo fromUserWithToken(final User user, final AccessToke
         return new UserInfo(userName, userEmail, userBio, userImage, accessToken);
     }
 
-    public UserName userName() {
+    public final UserName userName() {
         return userName;
     }
 
-    public UserEmail userEmail() {
+    public final UserEmail userEmail() {
         return userEmail;
     }
 
-    public UserBio userBio() {
+    public final UserBio userBio() {
         return userBio;
     }
 
-    public UserImage userImage() {
+    public final UserImage userImage() {
         return userImage;
     }
 
-    public AccessToken accessToken() {
+    public final AccessToken accessToken() {
         return accessToken;
     }
 }
diff --git a/src/main/java/com/study/realworld/domain/user/dto/UserJoin.java b/src/main/java/com/study/realworld/domain/user/dto/UserJoin.java
index 77e1d484..7f77b253 100644
--- a/src/main/java/com/study/realworld/domain/user/dto/UserJoin.java
+++ b/src/main/java/com/study/realworld/domain/user/dto/UserJoin.java
@@ -73,23 +73,23 @@ public static final Response fromUserWithToken(final User user, final AccessToke
             return new Response(userName, userEmail, userBio, userImage, accessToken);
         }
 
-        public UserEmail userEmail() {
+        public final UserEmail userEmail() {
             return userEmail;
         }
 
-        public UserName userName() {
+        public final UserName userName() {
             return userName;
         }
 
-        public UserBio userBio() {
+        public final UserBio userBio() {
             return userBio;
         }
 
-        public UserImage userImage() {
+        public final UserImage userImage() {
             return userImage;
         }
 
-        public AccessToken accessToken() {
+        public final AccessToken accessToken() {
             return accessToken;
         }
     }
diff --git a/src/main/java/com/study/realworld/domain/user/dto/UserUpdate.java b/src/main/java/com/study/realworld/domain/user/dto/UserUpdate.java
index b4d12944..fb375aa3 100644
--- a/src/main/java/com/study/realworld/domain/user/dto/UserUpdate.java
+++ b/src/main/java/com/study/realworld/domain/user/dto/UserUpdate.java
@@ -31,6 +31,13 @@ public static final class Request {
         @JsonProperty("image")
         private UserImage userImage;
 
+        @Builder
+        public Request(final UserEmail userEmail, final UserBio userBio, final UserImage userImage) {
+            this.userEmail = userEmail;
+            this.userBio = userBio;
+            this.userImage = userImage;
+        }
+
         public final UserEmail memberEmail() {
             return userEmail;
         }
@@ -42,13 +49,6 @@ public final UserBio memberBio() {
         public final UserImage memberImage() {
             return userImage;
         }
-
-        @Builder
-        public Request(final UserEmail userEmail, final UserBio userBio, final UserImage userImage) {
-            this.userEmail = userEmail;
-            this.userBio = userBio;
-            this.userImage = userImage;
-        }
     }
 
     @AllArgsConstructor(access = AccessLevel.PRIVATE)
@@ -95,7 +95,6 @@ public UserBio userBio() {
         public UserImage userImage() {
             return userImage;
         }
-
     }
 }
 
diff --git a/src/main/java/com/study/realworld/domain/user/error/exception/PasswordNullOrEmptyException.java b/src/main/java/com/study/realworld/domain/user/error/exception/PasswordNullOrEmptyException.java
new file mode 100644
index 00000000..f2efbd8b
--- /dev/null
+++ b/src/main/java/com/study/realworld/domain/user/error/exception/PasswordNullOrEmptyException.java
@@ -0,0 +1,10 @@
+package com.study.realworld.domain.user.error.exception;
+
+public class PasswordNullOrEmptyException extends UserBusinessException {
+
+    private static final String MESSAGE = "올바르지 않은 패스워드입니다.";
+
+    public PasswordNullOrEmptyException() {
+        super(MESSAGE);
+    }
+}
diff --git a/src/test/java/com/study/realworld/acceptance/FollowAcceptanceTest.java b/src/test/java/com/study/realworld/acceptance/FollowAcceptanceTest.java
index 7494f099..8b7fc63a 100644
--- a/src/test/java/com/study/realworld/acceptance/FollowAcceptanceTest.java
+++ b/src/test/java/com/study/realworld/acceptance/FollowAcceptanceTest.java
@@ -5,6 +5,7 @@
 import com.study.realworld.domain.follow.dto.FollowResponse;
 import com.study.realworld.domain.follow.dto.ProfileResponse;
 import com.study.realworld.domain.follow.dto.UnFollowResponse;
+import com.study.realworld.domain.follow.error.FollowErrorResponse;
 import com.study.realworld.domain.user.dto.UserJoin;
 import com.study.realworld.global.common.AccessToken;
 import io.restassured.RestAssured;
@@ -53,6 +54,23 @@ public void setUp() {
         );
     }
 
+    @Test
+    void 특정_사람의_프로필을_조회한다_QueryDsl() {
+        final Login.Response loginResponse = 로그인_되어있음(user1.userEmail().userEmail());
+        final ExtractableResponse<Response> response = 프로필_조회_요청_QueryDsl(
+                loginResponse.accessToken(),
+                user2.userName().userName());
+        final ProfileResponse profileResponse = response.as(ProfileResponse.class);
+
+        assertAll(
+                () -> assertThat(response.statusCode()).isEqualTo(HttpStatus.OK.value()),
+                () -> assertThat(profileResponse.userName()).isEqualTo(user2.userName()),
+                () -> assertThat(profileResponse.userBio()).isEqualTo(user2.userBio()),
+                () -> assertThat(profileResponse.userImage()).isEqualTo(user2.userImage()),
+                () -> assertThat(profileResponse.isFollowing()).isFalse()
+        );
+    }
+
     @Test
     void 특정_사람을_팔로우한다() {
         final Login.Response loginResponse = 로그인_되어있음(user1.userEmail().userEmail());
@@ -71,6 +89,18 @@ public void setUp() {
         );
     }
 
+    @Test
+    void 특정_사람을_팔로우했는데_한번_더_팔로우하면_예외를_발생시킨다() {
+        final Login.Response loginResponse = 로그인_되어있음(user1.userEmail().userEmail());
+        팔로우_요청(loginResponse.accessToken(), user2.userName().userName());
+        final ExtractableResponse<Response> response = 팔로우_요청(
+                loginResponse.accessToken(),
+                user2.userName().userName());
+
+        final FollowErrorResponse followErrorResponse = response.as(FollowErrorResponse.class);
+        assertThat(followErrorResponse.body().get(0)).isEqualTo("Follow is already exist");
+    }
+
     @Test
     void 특정_사람을_언팔로우한다() {
         final Login.Response loginResponse = 로그인_되어있음(user1.userEmail().userEmail());
@@ -90,6 +120,18 @@ public void setUp() {
         );
     }
 
+    @Test
+    void 특정_사람을_언팔로우했는데_한번_더_언팔로우하면_예외를_발생시킨다() {
+        final Login.Response loginResponse = 로그인_되어있음(user1.userEmail().userEmail());
+        언팔로우_요청(loginResponse.accessToken(), user2.userName().userName());
+        final ExtractableResponse<Response> response = 언팔로우_요청(
+                loginResponse.accessToken(),
+                user2.userName().userName());
+
+        final FollowErrorResponse followErrorResponse = response.as(FollowErrorResponse.class);
+        assertThat(followErrorResponse.body().get(0)).isEqualTo("Follow is not exist");
+    }
+
     protected ExtractableResponse<Response> 프로필_조회_요청(final AccessToken accessToken, final String userName) {
         return RestAssured.given()
                 .header(AUTHORIZATION, BEARER + accessToken.accessToken())
@@ -99,6 +141,15 @@ public void setUp() {
                 .extract();
     }
 
+    protected ExtractableResponse<Response> 프로필_조회_요청_QueryDsl(final AccessToken accessToken, final String userName) {
+        return RestAssured.given()
+                .header(AUTHORIZATION, BEARER + accessToken.accessToken())
+                .when()
+                .get(String.format("/api/profiles/querydsl/%s", userName))
+                .then()
+                .extract();
+    }
+
     protected ExtractableResponse<Response> 팔로우_요청(final AccessToken accessToken, final String userName) {
         return RestAssured.given()
                 .header(AUTHORIZATION, BEARER + accessToken.accessToken())
diff --git a/src/test/java/com/study/realworld/domain/article/domain/persist/ArticleTest.java b/src/test/java/com/study/realworld/domain/article/domain/persist/ArticleTest.java
index e4f4700b..97328720 100644
--- a/src/test/java/com/study/realworld/domain/article/domain/persist/ArticleTest.java
+++ b/src/test/java/com/study/realworld/domain/article/domain/persist/ArticleTest.java
@@ -6,6 +6,7 @@
 import com.study.realworld.domain.article.domain.vo.ArticleTitle;
 import org.junit.jupiter.api.DisplayName;
 import org.junit.jupiter.api.Test;
+import org.springframework.test.util.ReflectionTestUtils;
 
 import static com.study.realworld.domain.user.domain.persist.UserTest.testDefaultUser;
 import static org.assertj.core.api.Assertions.assertThat;
@@ -24,6 +25,20 @@ public class ArticleTest {
         );
     }
 
+    @Test
+    void 식별자가_값으면_동일한_객체이다() {
+        final Article article = testArticle();
+        final Article other = testArticle();
+
+        ReflectionTestUtils.setField(article, "articleId", 1L);
+        ReflectionTestUtils.setField(other, "articleId", 1L);
+
+        assertAll(
+                () -> assertThat(article).isEqualTo(other),
+                () -> assertThat(article).hasSameHashCodeAs(other)
+        );
+    }
+
     public static Article testArticle() {
         return Article.builder()
                 .articleSlug(ArticleSlug.from("how-to-train-your-dragon"))
diff --git a/src/test/java/com/study/realworld/domain/follow/domain/FollowQueryDSLRepositoryTest.java b/src/test/java/com/study/realworld/domain/follow/domain/FollowQueryDSLRepositoryTest.java
new file mode 100644
index 00000000..bdc14f90
--- /dev/null
+++ b/src/test/java/com/study/realworld/domain/follow/domain/FollowQueryDSLRepositoryTest.java
@@ -0,0 +1,53 @@
+package com.study.realworld.domain.follow.domain;
+
+import com.querydsl.jpa.impl.JPAQueryFactory;
+import com.study.realworld.domain.follow.dto.ProfileResponse;
+import com.study.realworld.domain.user.domain.persist.User;
+import org.junit.jupiter.api.BeforeEach;
+import org.junit.jupiter.api.Test;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.boot.test.autoconfigure.orm.jpa.DataJpaTest;
+
+import javax.persistence.EntityManager;
+
+import static com.study.realworld.domain.user.domain.persist.UserTest.testUser;
+import static org.assertj.core.api.Assertions.assertThat;
+import static org.junit.jupiter.api.Assertions.assertAll;
+
+@DataJpaTest
+class FollowQueryDSLRepositoryTest {
+
+    @Autowired
+    private EntityManager entityManager;
+
+    private FollowQueryDSLRepository followQueryDSLRepository;
+
+    @BeforeEach
+    void setUp() {
+        final JPAQueryFactory queryFactory = new JPAQueryFactory(entityManager);
+        followQueryDSLRepository = new FollowQueryDSLRepository(queryFactory);
+    }
+
+    @Test
+    void userInfoAndFollowable() {
+        final User follower = testUser("user1@gmail.com", "user1", "password1", "bio1", "image1");
+        final User followee = testUser("user2@gmail.com", "user2", "password2", "bio2", "image2");
+        entityManager.persist(follower);
+        entityManager.persist(followee);
+
+        final Follow follow = Follow.builder()
+                .follower(follower)
+                .followee(followee)
+                .build();
+        entityManager.persist(follow);
+
+        final ProfileResponse profileResponse = followQueryDSLRepository.userInfoAndFollowable(followee, follower);
+        assertAll(
+                () -> assertThat(profileResponse.userName()).isEqualTo(followee.userName()),
+                () -> assertThat(profileResponse.userBio()).isEqualTo(followee.userBio()),
+                () -> assertThat(profileResponse.userImage()).isEqualTo(followee.userImage()),
+                () -> assertThat(profileResponse.isFollowing()).isEqualTo(true)
+        );
+    }
+
+}
\ No newline at end of file
diff --git a/src/test/java/com/study/realworld/domain/follow/domain/FollowTest.java b/src/test/java/com/study/realworld/domain/follow/domain/FollowTest.java
index 6d27931b..3f67e08c 100644
--- a/src/test/java/com/study/realworld/domain/follow/domain/FollowTest.java
+++ b/src/test/java/com/study/realworld/domain/follow/domain/FollowTest.java
@@ -25,15 +25,31 @@ public class FollowTest {
         );
     }
 
+    @Test
+    void 팔로우는_식별자를_기준으로_동등성_비교를한다() {
+        final User follower = testUser(USER_EMAIL, USER_NAME, USER_PASSWORD, USER_BIO, USER_IMAGE);
+        final User followee = testUser(OTHER_USER_EMAIL, OTHER_USER_NAME, OTHER_USER_PASSWORD, OTHER_USER_BIO, OTHER_USER_IMAGE);
+        final Follow follow = testFollow(followee, follower);
+        final Follow other = testFollow(followee, follower);
+
+        ReflectionTestUtils.setField(follow, "followId", 1L);
+        ReflectionTestUtils.setField(other, "followId", 1L);
+
+        assertAll(
+                () -> assertThat(follow).isEqualTo(other),
+                () -> assertThat(follow).hasSameHashCodeAs(other)
+        );
+    }
+
     @Test
     void 팔로위_팔로워_정보를_반환한다() {
         final User follower = testUser(USER_EMAIL, USER_NAME, USER_PASSWORD, USER_BIO, USER_IMAGE);
         final User followee = testUser(OTHER_USER_EMAIL, OTHER_USER_NAME, OTHER_USER_PASSWORD, OTHER_USER_BIO, OTHER_USER_IMAGE);
         final Follow follow = testFollow(followee, follower);
-        ReflectionTestUtils.setField(follow, "id", 1L);
+        ReflectionTestUtils.setField(follow, "followId", 1L);
 
         assertAll(
-                () -> assertThat(follow.id()).isEqualTo(1L),
+                () -> assertThat(follow.followId()).isEqualTo(1L),
                 () -> assertThat(follow.followee()).isEqualTo(followee),
                 () -> assertThat(follow.follower()).isEqualTo(follower)
         );
diff --git a/src/test/java/com/study/realworld/domain/user/domain/persist/UserTest.java b/src/test/java/com/study/realworld/domain/user/domain/persist/UserTest.java
index c1750f42..b3c298a6 100644
--- a/src/test/java/com/study/realworld/domain/user/domain/persist/UserTest.java
+++ b/src/test/java/com/study/realworld/domain/user/domain/persist/UserTest.java
@@ -5,6 +5,7 @@
 import org.junit.jupiter.api.DisplayName;
 import org.junit.jupiter.api.Test;
 import org.springframework.security.crypto.password.PasswordEncoder;
+import org.springframework.test.util.ReflectionTestUtils;
 
 import static com.study.realworld.domain.user.domain.vo.util.UserVOFixture.*;
 import static org.assertj.core.api.Assertions.assertThat;
@@ -29,6 +30,17 @@ public class UserTest {
         );
     }
 
+    @Test
+    void 아이덴티티가_같다면_동일한_객체이다() {
+        final User user = new User();
+        final User other = new User();
+
+        ReflectionTestUtils.setField(user, "userId", 1L);
+        ReflectionTestUtils.setField(other, "userId", 1L);
+
+        assertThat(user).isEqualTo(other);
+    }
+
     @Test
     void 패스워드를_인코딩_할_수_있다() {
         final PasswordEncoder passwordEncoder = TestPasswordEncoder.initialize();
diff --git a/src/test/java/com/study/realworld/domain/user/domain/vo/UserPasswordTest.java b/src/test/java/com/study/realworld/domain/user/domain/vo/UserPasswordTest.java
index 3b53625a..106e8731 100644
--- a/src/test/java/com/study/realworld/domain/user/domain/vo/UserPasswordTest.java
+++ b/src/test/java/com/study/realworld/domain/user/domain/vo/UserPasswordTest.java
@@ -1,6 +1,7 @@
 package com.study.realworld.domain.user.domain.vo;
 
 import com.study.realworld.domain.user.domain.vo.util.TestPasswordEncoder;
+import com.study.realworld.domain.user.error.exception.PasswordNullOrEmptyException;
 import org.junit.jupiter.api.AfterAll;
 import org.junit.jupiter.api.BeforeAll;
 import org.junit.jupiter.api.DisplayName;
@@ -17,6 +18,7 @@
 import java.util.Set;
 
 import static org.assertj.core.api.Assertions.assertThat;
+import static org.assertj.core.api.Assertions.assertThatThrownBy;
 import static org.junit.jupiter.api.Assertions.assertAll;
 
 @DisplayName("사용자 비밀번호(UserPassword)")
@@ -68,6 +70,15 @@ public static void close() {
         );
     }
 
+    @ParameterizedTest(name = "입력값 : {0}")
+    @NullAndEmptySource
+    void 널또는_빈값으로_객체를_생성할_수_없다(final String userPasswordString) {
+        final PasswordEncoder passwordEncoder =  TestPasswordEncoder.initialize();
+        assertThatThrownBy(() -> UserPassword.encode(userPasswordString, passwordEncoder))
+                .isExactlyInstanceOf(PasswordNullOrEmptyException.class)
+                .hasMessage("올바르지 않은 패스워드입니다.");
+    }
+
     @ParameterizedTest(name = "입력값 : {0}")
     @ValueSource(strings = {"photo", "willy", "jhon", "kathy"})
     void 값을_반환할_수_있다(final String userPasswordString) {