diff --git a/src/main/java/treehouse/server/api/comment/business/CommentMapper.java b/src/main/java/treehouse/server/api/comment/business/CommentMapper.java
index 8b6148a..975928a 100644
--- a/src/main/java/treehouse/server/api/comment/business/CommentMapper.java
+++ b/src/main/java/treehouse/server/api/comment/business/CommentMapper.java
@@ -3,6 +3,7 @@
 import treehouse.server.api.comment.presentation.dto.CommentResponseDTO;
 import treehouse.server.api.member.business.MemberMapper;
 import treehouse.server.api.reaction.presentation.dto.ReactionResponseDTO;
+import treehouse.server.global.common.util.TimeFormatter;
 import treehouse.server.global.entity.comment.Comment;
 import treehouse.server.global.entity.comment.CommentType;
 import treehouse.server.global.entity.member.Member;
@@ -16,7 +17,7 @@ public class CommentMapper {
     public static CommentResponseDTO.CommentInfoDto toCommentInfoDto(Comment comment, ReactionResponseDTO.getReactionList reactionList,
                                                                      List<CommentResponseDTO.ReplyInfoDto> replyInfoDtoList) {
         return CommentResponseDTO.CommentInfoDto.builder()
-                .commentedAt(comment.getCreatedAt().toString())
+                .commentedAt(TimeFormatter.format(comment.getCreatedAt()))
                 .commentId(comment.getId())
                 .context(comment.getContent())
                 .reactionList(reactionList)
@@ -28,7 +29,7 @@ public static CommentResponseDTO.CommentInfoDto toCommentInfoDto(Comment comment
 
     public static CommentResponseDTO.ReplyInfoDto toReplyInfoDto(Comment comment, ReactionResponseDTO.getReactionList reactionList) {
         return CommentResponseDTO.ReplyInfoDto.builder()
-                .commentedAt(comment.getCreatedAt().toString())
+                .commentedAt(TimeFormatter.format(comment.getCreatedAt()))
                 .commentId(comment.getId())
                 .context(comment.getContent())
                 .reactionList(reactionList)
diff --git a/src/main/java/treehouse/server/api/comment/business/CommentService.java b/src/main/java/treehouse/server/api/comment/business/CommentService.java
index 06f8699..1ad8cd7 100644
--- a/src/main/java/treehouse/server/api/comment/business/CommentService.java
+++ b/src/main/java/treehouse/server/api/comment/business/CommentService.java
@@ -116,13 +116,8 @@ public CommentResponseDTO.CommentListDto getCommentResponseList(User user, Long
                             ));
                     ReactionResponseDTO.getReactionList reactionDtoList = ReactionMapper.toGetReactionList(reactionMap);
 
-                    // 여기서 comment 에 대한 reply 목록을 조회해서 List<ReplyInfoDto> 를 만든 다음, mapper에 매개변수로 넣고, mapper 코드 업데이트 하자.
-
-                    // 1. queryAdapter 에 parentId 가지고 childList 조회하는 메서드 만들기
                     List<Comment> childCommentList = commentQueryAdapter.getChildCommentListByPostIdAndParentId(postId, comment.getId(), pageable);
 
-                    // 2. mapper 에 childList를 각각 comment 에서 ReplyInfoDto 로 바꾸는 메서드 만들기
-                    // 각 답글마다 reactionList를 생성
                     List<CommentResponseDTO.ReplyInfoDto> replyInfoDtoList = childCommentList.stream()
                             .map(reply -> {
                                 List<Reaction> replyReactions = reactionQueryAdapter.findAllByComment(reply);
@@ -143,9 +138,6 @@ public CommentResponseDTO.CommentListDto getCommentResponseList(User user, Long
                             })
                             .collect(Collectors.toList());
 
-
-                    // 3. mapper 에 이렇게 만든 childList 를 포함해서 최종 응답 형태인 CommentList 로 바꾸는 메서드 만들고 호출하기
-
                     return CommentMapper.toCommentInfoDto(comment, reactionDtoList,replyInfoDtoList);
                 })
                 .collect(Collectors.toList());
diff --git a/src/main/java/treehouse/server/api/member/business/MemberMapper.java b/src/main/java/treehouse/server/api/member/business/MemberMapper.java
index 543187a..c914ecb 100644
--- a/src/main/java/treehouse/server/api/member/business/MemberMapper.java
+++ b/src/main/java/treehouse/server/api/member/business/MemberMapper.java
@@ -60,6 +60,19 @@ public static MemberResponseDTO.getProfile toGetProfile(List<Branch> branches, M
                 .build();
     }
 
+    public static MemberResponseDTO.getProfile toGetMemberProfile(List<Branch> branches, Member member, Member targetMember) {
+        return MemberResponseDTO.getProfile.builder()
+                .memberId(targetMember.getId())
+                .memberName(targetMember.getName())
+                .userName(targetMember.getUser().getName())
+                .closestMemberCount(BranchUtil.countClosestMembers(branches, targetMember.getId())) // ClosestMember 기능 개발 이후 변경 예정
+                .treehouseCount(targetMember.getUser().getMemberList().size()) // TreehouseCount 기능 개발 이후 변경 예정
+                .fromMe(BranchUtil.calculateBranchDegree(branches, member.getId(), targetMember.getId()))
+                .profileImageUrl(targetMember.getProfileImageUrl())
+                .bio(targetMember.getBio())
+                .build();
+    }
+
     public static MemberResponseDTO.updateProfile toUpdateProfile(Member member) {
         return MemberResponseDTO.updateProfile.builder()
                 .memberId(member.getId())
diff --git a/src/main/java/treehouse/server/api/member/business/MemberService.java b/src/main/java/treehouse/server/api/member/business/MemberService.java
index 1e9488a..c21e358 100644
--- a/src/main/java/treehouse/server/api/member/business/MemberService.java
+++ b/src/main/java/treehouse/server/api/member/business/MemberService.java
@@ -54,6 +54,16 @@ public MemberResponseDTO.getProfile getMyProfile(User user, Long treehouseId){
         return MemberMapper.toGetProfile(branches, member, member);
     }
 
+    public MemberResponseDTO.getProfile getMemberProfile(User user, Long memberId, Long treehouseId){
+        TreeHouse treeHouse = treehouseQueryAdapter.getTreehouseById(treehouseId);
+        Member member = memberQueryAdapter.findByUserAndTreehouse(user, treeHouse);
+        Member targetMember = memberQueryAdapter.findById(memberId);
+        List<Branch> branches = branchQueryAdapter.findAllByTreeHouse(treeHouse); // 트리하우스 내 모든 브랜치 조회
+        return MemberMapper.toGetMemberProfile(branches, member, targetMember);
+    }
+
+
+
     @Transactional
     public MemberResponseDTO.updateProfile updateProfile(User user, Long treehouseId, MemberRequestDTO.updateProfile request){
         TreeHouse treeHouse = treehouseQueryAdapter.getTreehouseById(treehouseId);
diff --git a/src/main/java/treehouse/server/api/member/presentation/MemberApi.java b/src/main/java/treehouse/server/api/member/presentation/MemberApi.java
index c1dd034..9f789c5 100644
--- a/src/main/java/treehouse/server/api/member/presentation/MemberApi.java
+++ b/src/main/java/treehouse/server/api/member/presentation/MemberApi.java
@@ -10,6 +10,8 @@
 import treehouse.server.api.member.business.MemberService;
 import treehouse.server.api.member.presentation.dto.MemberRequestDTO;
 import treehouse.server.api.member.presentation.dto.MemberResponseDTO;
+import treehouse.server.api.post.business.PostService;
+import treehouse.server.api.post.presentation.dto.PostResponseDTO;
 import treehouse.server.global.common.CommonResponse;
 import treehouse.server.global.entity.User.User;
 import treehouse.server.global.security.handler.annotation.AuthMember;
@@ -22,13 +24,14 @@
 public class MemberApi {
 
     private final MemberService memberService;
+    private final PostService postService;
 
     @PostMapping("/members/register")
     @Operation(summary = "트리하우스 회원가입 \uD83D\uDD11✅", description = "트리하우스 멤버로 가입합니다.")
     public CommonResponse<MemberResponseDTO.registerMember> registerTreehouseMember(
             @RequestBody final MemberRequestDTO.registerMember request,
             @AuthMember @Parameter(hidden = true) User user
-    ){
+    ) {
         return CommonResponse.onSuccess(memberService.register(user, request));
     }
 
@@ -37,17 +40,39 @@ public CommonResponse<MemberResponseDTO.registerMember> registerTreehouseMember(
     public CommonResponse<MemberResponseDTO.getProfile> getMyProfile(
             @PathVariable final Long treehouseId,
             @AuthMember @Parameter(hidden = true) User user
-    ){
+    ) {
         return CommonResponse.onSuccess(memberService.getMyProfile(user, treehouseId));
     }
 
+    @GetMapping("/treehouses/{treehouseId}/profiles/{memberId}")
+    @Operation(summary = "멤버 프로필 조회 \uD83D\uDC64 ✅", description = "특정 트리하우스에서 특정 멤버의 프로필을 조회합니다.")
+    public CommonResponse<MemberResponseDTO.getProfile> getMemberProfile(
+            @PathVariable(name = "treehouseId") Long treehouseId,
+            @PathVariable(name = "memberId") Long memberId,
+            @AuthMember @Parameter(hidden = true) User user
+    ) {
+        return CommonResponse.onSuccess(memberService.getMemberProfile(user, memberId, treehouseId));
+    }
+
+
     @PatchMapping("/treehouses/{treehouseId}/profiles/myProfile")
     @Operation(summary = "내 프로필 수정 \uD83D\uDC64 ✅", description = "특정 트리하우스에서 내 프로필을 수정합니다.")
     public CommonResponse<MemberResponseDTO.updateProfile> updateProfile(
             @PathVariable final Long treehouseId,
             @RequestBody final MemberRequestDTO.updateProfile request,
             @AuthMember @Parameter(hidden = true) User user
-    ){
+    ) {
         return CommonResponse.onSuccess(memberService.updateProfile(user, treehouseId, request));
     }
+
+    @GetMapping("/treehouses/{treehouseId}/profiles/{memberId}/posts")
+    @Operation(summary = "멤버가 작성한 게시글 조회 \uD83D\uDC64 ✅", description = "특정 트리하우스에서 특정 멤버가 작성한 게시글 목록을 조회합니다.")
+    public CommonResponse<PostResponseDTO.getMemberPostList> getPosts(
+            @PathVariable(name = "treehouseId") Long treehouseId,
+            @PathVariable(name = "memberId") Long memberId,
+            @RequestParam(defaultValue = "0") int page,
+            @AuthMember @Parameter(hidden = true) User user
+    ) {
+        return CommonResponse.onSuccess(postService.getMemberPosts(user, memberId, treehouseId, page));
+    }
 }
diff --git a/src/main/java/treehouse/server/api/member/presentation/dto/MemberResponseDTO.java b/src/main/java/treehouse/server/api/member/presentation/dto/MemberResponseDTO.java
index 0e9128e..a73d75d 100644
--- a/src/main/java/treehouse/server/api/member/presentation/dto/MemberResponseDTO.java
+++ b/src/main/java/treehouse/server/api/member/presentation/dto/MemberResponseDTO.java
@@ -47,4 +47,5 @@ public static class getProfile {
     public static class updateProfile {
         private Long memberId;
     }
+
 }
diff --git a/src/main/java/treehouse/server/api/post/business/PostMapper.java b/src/main/java/treehouse/server/api/post/business/PostMapper.java
index 59f2b43..b565b4a 100644
--- a/src/main/java/treehouse/server/api/post/business/PostMapper.java
+++ b/src/main/java/treehouse/server/api/post/business/PostMapper.java
@@ -31,6 +31,24 @@ public static PostResponseDTO.getPostDetails toGetPostDetails(Post post, List<St
                 .build();
     }
 
+    public static PostResponseDTO.getOnlyPostDetail toGetOnlyPostDetails(Post post, List<String> postImageUrlList, ReactionResponseDTO.getReactionList reactionList) {
+        return PostResponseDTO.getOnlyPostDetail.builder()
+                .postId(post.getId())
+                .context(post.getContent())
+                .pictureUrlList(postImageUrlList)
+                .commentCount(post.getCommentList().size())
+                .reactionList(reactionList)
+                .postedAt(TimeFormatter.format(post.getCreatedAt()))
+                .build();
+    }
+
+    public static PostResponseDTO.getMemberPostList toGetMemberPostList(Member targetMember, List<PostResponseDTO.getOnlyPostDetail> onlyPostDetailList) {
+        return PostResponseDTO.getMemberPostList.builder()
+                .memberProfile(MemberMapper.toGetWriterProfile(targetMember))
+                .postList(onlyPostDetailList)
+                .build();
+    }
+
     public static Post toPost(PostRequestDTO.createPost request, Member member, TreeHouse treeHouse){
         return Post.builder()
                 .content(request.getContext())
diff --git a/src/main/java/treehouse/server/api/post/business/PostService.java b/src/main/java/treehouse/server/api/post/business/PostService.java
index 14fdc45..dec842f 100644
--- a/src/main/java/treehouse/server/api/post/business/PostService.java
+++ b/src/main/java/treehouse/server/api/post/business/PostService.java
@@ -177,6 +177,44 @@ public List<PostResponseDTO.getPostDetails> getPosts (User user, Long treehouseI
         return postDtoList;
     }
 
+    public PostResponseDTO.getMemberPostList getMemberPosts(User user, Long targetMemberId, Long treehouseId, int page) {
+
+        Pageable pageable = PageRequest.of(page, 10, Sort.by(Sort.Direction.DESC, "createdAt"));
+        TreeHouse treehouse = treehouseQueryAdapter.getTreehouseById(treehouseId);
+        Member member = memberQueryAdapter.findByUserAndTreehouse(user, treehouse);
+        Member targetMember = memberQueryAdapter.findById(targetMemberId);
+
+        List<Post> postListByMember = postQueryAdapter.findAllByTreeHouseAndWriter(treehouse, targetMember, pageable);
+
+
+        List<PostResponseDTO.getOnlyPostDetail> postDtoList = postListByMember.stream()
+                .map(post -> {
+                    List<PostImage> postImageList = post.getPostImageList();
+                    List<String> postImageUrlList= postImageList.stream()
+                            .map(PostImage::getImageUrl)
+                            .toList();
+                    List<Reaction> reactions = reactionQueryAdapter.findAllByPost(post);
+                    Map<String, ReactionResponseDTO.getReaction> reactionMap = reactions.stream()
+                            .collect(Collectors.toMap(
+                                    Reaction::getReactionName,
+                                    reaction -> {
+                                        String reactionName = reaction.getReactionName();
+                                        Integer reactionCount = reactionQueryAdapter.countReactionsByReactionNameAndPostId(reactionName, post.getId());
+                                        Boolean isPushed = reactionQueryAdapter.existByMemberAndPostAndReactionName(member, post, reactionName);
+                                        return ReactionMapper.toGetReaction(reaction, reactionCount, isPushed);
+                                    },
+                                    (existing, replacement) -> existing // 중복되는 경우 기존 값을 사용
+                            ));
+
+                    ReactionResponseDTO.getReactionList reactionDtoList = ReactionMapper.toGetReactionList(reactionMap);
+                    return PostMapper.toGetOnlyPostDetails(post, postImageUrlList, reactionDtoList);
+                })
+                .collect(Collectors.toList());
+
+        return PostMapper.toGetMemberPostList(targetMember, postDtoList);
+    }
+
+
     @Transactional
     public PostResponseDTO.updatePostResult updatePost(User user, Long treehouseId, Long postId, PostRequestDTO.updatePost request) {
         //TODO 현재 로그인 한 사용자가 게시글 작성자인지 확인하는 로직 개선
diff --git a/src/main/java/treehouse/server/api/post/implement/PostQueryAdapter.java b/src/main/java/treehouse/server/api/post/implement/PostQueryAdapter.java
index 82f83dc..72da6c8 100644
--- a/src/main/java/treehouse/server/api/post/implement/PostQueryAdapter.java
+++ b/src/main/java/treehouse/server/api/post/implement/PostQueryAdapter.java
@@ -6,6 +6,7 @@
 import org.springframework.data.domain.Pageable;
 import treehouse.server.api.post.persistence.PostRepository;
 import treehouse.server.global.annotations.Adapter;
+import treehouse.server.global.entity.member.Member;
 import treehouse.server.global.entity.post.Post;
 import treehouse.server.global.entity.treeHouse.TreeHouse;
 import treehouse.server.global.exception.GlobalErrorCode;
@@ -27,4 +28,8 @@ public Post findById(Long postId) {
     public List<Post> findAllByTreehouse(TreeHouse treehouse, Pageable pageable) {
         return postRepository.findAllByTreeHouse(treehouse, pageable);
     }
+
+    public List<Post> findAllByTreeHouseAndWriter(TreeHouse treeHouse, Member writer, Pageable pageable) {
+        return postRepository.findAllByTreeHouseAndWriter(treeHouse, writer, pageable);
+    }
 }
diff --git a/src/main/java/treehouse/server/api/post/persistence/PostRepository.java b/src/main/java/treehouse/server/api/post/persistence/PostRepository.java
index 67cc071..9e5a174 100644
--- a/src/main/java/treehouse/server/api/post/persistence/PostRepository.java
+++ b/src/main/java/treehouse/server/api/post/persistence/PostRepository.java
@@ -4,6 +4,7 @@
 import org.springframework.data.domain.Page;
 import org.springframework.data.domain.Pageable;
 import org.springframework.data.jpa.repository.JpaRepository;
+import treehouse.server.global.entity.member.Member;
 import treehouse.server.global.entity.post.Post;
 import treehouse.server.global.entity.treeHouse.TreeHouse;
 
@@ -13,4 +14,6 @@
 
 public interface PostRepository extends JpaRepository<Post, Long> {
     List<Post> findAllByTreeHouse(TreeHouse treehouse, Pageable pageable);
+
+    List<Post> findAllByTreeHouseAndWriter(TreeHouse treeHouse, Member writer, Pageable pageable);
 }
diff --git a/src/main/java/treehouse/server/api/post/presentation/dto/PostResponseDTO.java b/src/main/java/treehouse/server/api/post/presentation/dto/PostResponseDTO.java
index bc4c651..f2ab344 100644
--- a/src/main/java/treehouse/server/api/post/presentation/dto/PostResponseDTO.java
+++ b/src/main/java/treehouse/server/api/post/presentation/dto/PostResponseDTO.java
@@ -27,6 +27,28 @@ public static class getPostDetails {
         private String postedAt;
     }
 
+    @Builder
+    @Getter
+    @NoArgsConstructor
+    @AllArgsConstructor
+    public static class getOnlyPostDetail {
+        private Long postId;
+        private String context;
+        private List<String> pictureUrlList;
+        private Integer commentCount;
+        private ReactionResponseDTO.getReactionList reactionList;
+        private String postedAt;
+    }
+
+    @Builder
+    @Getter
+    @NoArgsConstructor
+    @AllArgsConstructor
+    public static class getMemberPostList {
+        private MemberResponseDTO.getWriterProfile memberProfile;
+        List<getOnlyPostDetail> postList;
+    }
+
     @Builder
     @Getter
     @NoArgsConstructor