diff --git a/backend/ongi/src/main/java/ongi/auth/dto/RegisterRequest.java b/backend/ongi/src/main/java/ongi/auth/dto/RegisterRequest.java
index ff116b4..e6c85ac 100644
--- a/backend/ongi/src/main/java/ongi/auth/dto/RegisterRequest.java
+++ b/backend/ongi/src/main/java/ongi/auth/dto/RegisterRequest.java
@@ -17,7 +17,10 @@ public record RegisterRequest(
         String name,
 
         @NotNull(message = "부모 여부는 필수 입력값입니다.")
-        Boolean isParent
+        Boolean isParent,
+
+        @NotNull(message = "프로필 이미지 ID는 필수 입력값입니다.")
+        Integer profileImageId
 
 ) {
 
diff --git a/backend/ongi/src/main/java/ongi/user/dto/UserInfo.java b/backend/ongi/src/main/java/ongi/user/dto/UserInfo.java
index 694b7c1..b30db57 100644
--- a/backend/ongi/src/main/java/ongi/user/dto/UserInfo.java
+++ b/backend/ongi/src/main/java/ongi/user/dto/UserInfo.java
@@ -9,6 +9,7 @@ public record UserInfo(
         String email,
         String name,
         Boolean isParent,
+        Integer profileImageId,
         LocalDateTime createdAt,
         LocalDateTime updatedAt
 
@@ -19,6 +20,7 @@ public UserInfo(User user){
                 user.getEmail(),
                 user.getName(),
                 user.getIsParent(),
+                user.getProfileImageId(),
                 user.getCreatedAt(),
                 user.getUpdatedAt()
         );
diff --git a/backend/ongi/src/main/java/ongi/user/entity/User.java b/backend/ongi/src/main/java/ongi/user/entity/User.java
index cab806c..702a7cc 100644
--- a/backend/ongi/src/main/java/ongi/user/entity/User.java
+++ b/backend/ongi/src/main/java/ongi/user/entity/User.java
@@ -35,6 +35,9 @@ public class User {
     @Column(nullable = false)
     private Boolean isParent;
 
+    @Column(nullable = false)
+    private Integer profileImageId;
+
     @CreatedDate
     @Column(updatable = false, nullable = false)
     private LocalDateTime createdAt;
diff --git a/backend/ongi/src/test/java/ongi/FamilyControllerUnitTest.java b/backend/ongi/src/test/java/ongi/FamilyControllerUnitTest.java
index f337466..f737f39 100644
--- a/backend/ongi/src/test/java/ongi/FamilyControllerUnitTest.java
+++ b/backend/ongi/src/test/java/ongi/FamilyControllerUnitTest.java
@@ -113,8 +113,8 @@ class GetFamilyMembersTest {
         void getFamilyMembers_Success() {
             // given
             List<UserInfo> expectedMembers = Arrays.asList(
-                    new UserInfo(UUID.randomUUID(), "test@example.com", "홍길동", true, LocalDateTime.now(), LocalDateTime.now()),
-                    new UserInfo(UUID.randomUUID(), "member@example.com", "김철수", false, LocalDateTime.now(), LocalDateTime.now())
+                    new UserInfo(UUID.randomUUID(), "test@example.com", "홍길동", true, 1, LocalDateTime.now(), LocalDateTime.now()),
+                    new UserInfo(UUID.randomUUID(), "member@example.com", "김철수", false, 1, LocalDateTime.now(), LocalDateTime.now())
             );
             given(familyService.getFamilyMembers(customUserDetails.getUser())).willReturn(expectedMembers);