diff --git a/src/main/java/kdt/web_ide/boards/controller/BoardController.java b/src/main/java/kdt/web_ide/boards/controller/BoardController.java
index 7f956fe..137874b 100644
--- a/src/main/java/kdt/web_ide/boards/controller/BoardController.java
+++ b/src/main/java/kdt/web_ide/boards/controller/BoardController.java
@@ -13,6 +13,7 @@
 import io.swagger.v3.oas.annotations.tags.Tag;
 import kdt.web_ide.boards.dto.request.BoardSaveRequesetDto;
 import kdt.web_ide.boards.dto.request.BoardUpdateRequestDto;
+import kdt.web_ide.boards.dto.request.BoardUserInviteRequestDto;
 import kdt.web_ide.boards.dto.response.BoardResponseDto;
 import kdt.web_ide.boards.dto.response.BoardUserResponseDto;
 import kdt.web_ide.boards.service.BoardService;
@@ -57,17 +58,17 @@ public ResponseEntity<String> deleteBoard(
     return ResponseEntity.status(HttpStatus.OK).body("게시판이 삭제되었습니다.");
   }
 
-  //  // 게시판 인원 초대
-  //  @Operation(summary = "게시판 멤버 초대 API", description = "이메일로 멤버를 초대합니다. 리더만 초대 가능합니다.")
-  //  @PostMapping("/{boardId}/invite")
-  //  public ResponseEntity<BoardUserResponseDto> inviteMember(
-  //      @PathVariable Long boardId,
-  //      @RequestBody @Valid BoardUserInviteRequestDto requestDto,
-  //      @AuthenticationPrincipal CustomUserDetails userDetails) {
-  //    BoardUserResponseDto invitedUser =
-  //        boardService.inviteMember(requestDto, boardId, userDetails.getMember());
-  //    return ResponseEntity.ok(invitedUser);
-  //  }
+  @Operation(summary = "게시판 멤버 초대 API", description = "카카오 ID로 멤버를 초대합니다. 리더만 초대 가능합니다.")
+  @PostMapping("/{boardId}/invite")
+  public ResponseEntity<BoardUserResponseDto> inviteMember(
+      @PathVariable Long boardId,
+      @RequestBody @Valid BoardUserInviteRequestDto requestDto,
+      @AuthenticationPrincipal CustomUserDetails userDetails) {
+
+    BoardUserResponseDto invitedUser =
+        boardService.inviteMember(requestDto, boardId, userDetails.getMember());
+    return ResponseEntity.ok(invitedUser);
+  }
 
   // 게시판 인원 조회
   @Operation(summary = "게시판 인원 조회 API", description = "해당 게시판의 모든 멤버를 조회합니다.")
diff --git a/src/main/java/kdt/web_ide/boards/dto/request/BoardUserInviteRequestDto.java b/src/main/java/kdt/web_ide/boards/dto/request/BoardUserInviteRequestDto.java
index 868b3db..8b0defa 100644
--- a/src/main/java/kdt/web_ide/boards/dto/request/BoardUserInviteRequestDto.java
+++ b/src/main/java/kdt/web_ide/boards/dto/request/BoardUserInviteRequestDto.java
@@ -9,7 +9,7 @@
 @Getter
 @NoArgsConstructor
 public class BoardUserInviteRequestDto {
-  private String loginId;
+  private Long kakaoId;
 
   public BoardUser toEntity(Board board, Member member) {
     return BoardUser.builder().board(board).isLeader(false).member(member).build();
diff --git a/src/main/java/kdt/web_ide/boards/service/BoardService.java b/src/main/java/kdt/web_ide/boards/service/BoardService.java
index 31e6360..edf42ed 100644
--- a/src/main/java/kdt/web_ide/boards/service/BoardService.java
+++ b/src/main/java/kdt/web_ide/boards/service/BoardService.java
@@ -9,6 +9,7 @@
 
 import kdt.web_ide.boards.dto.request.BoardSaveRequesetDto;
 import kdt.web_ide.boards.dto.request.BoardUpdateRequestDto;
+import kdt.web_ide.boards.dto.request.BoardUserInviteRequestDto;
 import kdt.web_ide.boards.dto.response.BoardResponseDto;
 import kdt.web_ide.boards.dto.response.BoardUserResponseDto;
 import kdt.web_ide.boards.entity.Board;
@@ -72,27 +73,40 @@ public void deleteBoard(Long boardId, Member member) {
     boardRepository.delete(board);
   }
 
-  // 게시판 인원 초대
-  //  @Transactional
-  //  public BoardUserResponseDto inviteMember(
-  //      BoardUserInviteRequestDto requestDto, Long boardId, Member currentMember) {
-  //    if (requestDto.getLoginId() == null || requestDto.getLoginId().isEmpty()) {
-  //      throw new CustomException(ErrorCode.INVALID_LOGINID);
-  //    }
-  //    // 존재하는 게시판인지 확인
-  //    Board thisBoard =
-  //        boardRepository
-  //            .findById(boardId)
-  //            .orElseThrow(() -> new CustomException(ErrorCode.BOARD_NOT_FOUND));
-  //    // 존재하는 멤버인지 확인
-  //    Member member =
-  //        memberRepository
-  //            .findByLoginId(requestDto.getLoginId())
-  //            .orElseThrow(() -> new CustomException(ErrorCode.USER_NOT_FOUND));
-  //    BoardUser newUser = requestDto.toEntity(thisBoard, member);
-  //    boardUserRepository.save(newUser);
-  //    return new BoardUserResponseDto(newUser);
-  //  }
+  @Transactional
+  public BoardUserResponseDto inviteMember(
+      BoardUserInviteRequestDto requestDto, Long boardId, Member currentMember) {
+
+    if (requestDto.getKakaoId() == null) {
+      throw new CustomException(ErrorCode.INVALID_KAKAO_ID);
+    }
+
+    Board board =
+        boardRepository
+            .findById(boardId)
+            .orElseThrow(() -> new CustomException(ErrorCode.BOARD_NOT_FOUND));
+
+    boardUserRepository
+        .findByMemberAndBoardAndIsLeaderTrue(currentMember, board)
+        .orElseThrow(() -> new CustomException(ErrorCode.NO_PERMISSION));
+
+    Member memberToInvite =
+        memberRepository
+            .findByKakaoId(requestDto.getKakaoId())
+            .orElseThrow(() -> new CustomException(ErrorCode.USER_NOT_FOUND));
+
+    boardUserRepository
+        .findByMemberAndBoard(memberToInvite, board)
+        .ifPresent(
+            member -> {
+              throw new CustomException(ErrorCode.ALREADY_IN_BOARD);
+            });
+
+    BoardUser newUser = requestDto.toEntity(board, memberToInvite);
+    boardUserRepository.save(newUser);
+
+    return new BoardUserResponseDto(newUser);
+  }
 
   // 게시판 인원 조회
   @Transactional
diff --git a/src/main/java/kdt/web_ide/common/exception/ErrorCode.java b/src/main/java/kdt/web_ide/common/exception/ErrorCode.java
index 59974ec..32309d6 100644
--- a/src/main/java/kdt/web_ide/common/exception/ErrorCode.java
+++ b/src/main/java/kdt/web_ide/common/exception/ErrorCode.java
@@ -21,6 +21,7 @@ public enum ErrorCode {
   INVALID_IMAGE(HttpStatus.BAD_REQUEST, "ACCOUNT-010", "유효하지 않은 이미지입니다."),
   INVALID_NICKNAME(HttpStatus.BAD_REQUEST, "ACCOUNT-011", "유효하지 않은 이미지입니다."),
   KAKAO_REFRESH_TOKEN_NOT_FOUND(HttpStatus.UNAUTHORIZED, "ACCOUNT-0012", "유효하지 않은 토큰입니다."),
+  INVALID_KAKAO_ID(HttpStatus.BAD_REQUEST, "ACCOUNT-013", "유효하지 않은 카카오 아이디입니다."),
 
   // 채팅방
   CHATROOM_NOT_FOUND(HttpStatus.NOT_FOUND, "ACCOUNT-008", "채팅방을 찾을 수 없습니다."),
@@ -31,6 +32,7 @@ public enum ErrorCode {
   BOARD_NOT_FOUND(HttpStatus.NOT_FOUND, "BOARD-003", "존재하지 않는 게시판입니다."),
   MEMBER_NOT_IN_BOARD(HttpStatus.NOT_FOUND, "BOARD-004", "게시판에 존재하지 않는 멤버입니다."),
   INVALID_TITLE(HttpStatus.BAD_REQUEST, "BOARD-005", "제목 입력은 필수입니다."),
+  ALREADY_IN_BOARD(HttpStatus.BAD_REQUEST, "BOARD-006", "이미 게시판에 존재합니다."),
 
   // S3
   S3_UPLOAD_ERROR(HttpStatus.BAD_REQUEST, "S3-001", "S3 업로드 실패"),
diff --git a/src/main/java/kdt/web_ide/members/controller/MemberController.java b/src/main/java/kdt/web_ide/members/controller/MemberController.java
index a189af6..2022130 100644
--- a/src/main/java/kdt/web_ide/members/controller/MemberController.java
+++ b/src/main/java/kdt/web_ide/members/controller/MemberController.java
@@ -85,6 +85,7 @@ public ResponseEntity<?> login(@RequestBody KakaoLoginParams params) {
 
   // 회원 정보 조회
   @GetMapping("/profile")
+  @Operation(summary = "회원 정보 조회 API", description = "회원 정보 조회")
   public ResponseEntity<?> getMember(@AuthenticationPrincipal CustomUserDetails userDetails) {
     MemberResponse memberResponse = memberService.getMember(userDetails.getMember());
     return ResponseEntity.status(HttpStatus.OK).body(memberResponse);
diff --git a/src/main/java/kdt/web_ide/members/dto/response/MemberResponse.java b/src/main/java/kdt/web_ide/members/dto/response/MemberResponse.java
index b1624c4..a728620 100644
--- a/src/main/java/kdt/web_ide/members/dto/response/MemberResponse.java
+++ b/src/main/java/kdt/web_ide/members/dto/response/MemberResponse.java
@@ -11,6 +11,7 @@ public MemberResponse(Member member) {
     this.memberId = member.getMemberId();
     this.nickName = member.getNickName();
     this.profileImage = member.getProfileImage();
+    this.kakaoId = member.getKakaoId();
   }
 
   private final Long memberId;
@@ -19,6 +20,8 @@ public MemberResponse(Member member) {
 
   private final String profileImage;
 
+  private final Long kakaoId;
+
   public static MemberResponse of(Member member) {
     return new MemberResponse(member);
   }