diff --git a/src/main/java/org/example/tree/domain/branch/controller/BranchController.java b/src/main/java/org/example/tree/domain/branch/controller/BranchController.java
index c545627..6859e39 100644
--- a/src/main/java/org/example/tree/domain/branch/controller/BranchController.java
+++ b/src/main/java/org/example/tree/domain/branch/controller/BranchController.java
@@ -1,9 +1,12 @@
 package org.example.tree.domain.branch.controller;
 
+import io.swagger.v3.oas.annotations.Parameter;
 import lombok.RequiredArgsConstructor;
 import org.example.tree.domain.branch.dto.BranchResponseDTO;
 import org.example.tree.domain.branch.service.BranchService;
+import org.example.tree.domain.member.entity.Member;
 import org.example.tree.global.common.ApiResponse;
+import org.example.tree.global.security.handler.annotation.AuthMember;
 import org.springframework.web.bind.annotation.*;
 
 @RestController
@@ -16,10 +19,9 @@ public class BranchController {
     public ApiResponse<BranchResponseDTO.branchView> getBranchView(
             @PathVariable Long treeId,
             @RequestParam("memberId") Long profileId,
-            @RequestHeader("Authorization") final String header
+            @AuthMember @Parameter(hidden = true) Member member
     ) {
-        String token = header.replace("Bearer ", "");
-        return ApiResponse.onSuccess(branchService.getBranchView(treeId, token, profileId));
+        return ApiResponse.onSuccess(branchService.getBranchView(treeId, member, profileId));
     }
 
     @GetMapping("/trees/{treeId}/branchView/all")
diff --git a/src/main/java/org/example/tree/domain/branch/service/BranchService.java b/src/main/java/org/example/tree/domain/branch/service/BranchService.java
index 638dfe2..6280fdf 100644
--- a/src/main/java/org/example/tree/domain/branch/service/BranchService.java
+++ b/src/main/java/org/example/tree/domain/branch/service/BranchService.java
@@ -38,6 +38,13 @@ public void createBranch(Tree tree,Profile inviter, Profile invitee) {
 //        return branch.getBranchDegree();
 //    }
 
+    /**
+     * 특정 멤버 사이의 Branch Degree를 계산합니다.
+     * @param treeId
+     * @param rootId
+     * @param leafId
+     * @return branchDegree(int)
+     */
     public int calculateBranchDegree(Long treeId, Long rootId, Long leafId) {
         // 두 멤버 사이의 모든 Branch 엔티티를 찾습니다.
         List<Branch> branches = branchQueryService.findAllBranchesInTree(treeId);
@@ -48,6 +55,14 @@ public int calculateBranchDegree(Long treeId, Long rootId, Long leafId) {
         return shortestDistance;
     }
 
+    /**
+     * 특정 멤버까지의 브랜치 최단 거리를 계산합니다.
+     * @param branches
+     * @param startMemberId
+     * @param endMemberId
+     * @return ShortestPathResult(최단 거리 결과 DTO)
+     */
+
     public BranchResponseDTO.ShortestPathResult findShortestDistance(List<Branch> branches, Long startMemberId, Long endMemberId) {
         Map<Long, List<Long>> adjacencyList = new HashMap<>();
         Map<Long, Long> prev = new HashMap<>();
@@ -91,13 +106,19 @@ public BranchResponseDTO.ShortestPathResult findShortestDistance(List<Branch> br
         return branchConverter.toShortestPathResult(distance, path);
     }
 
+    /**
+     * 트리하우스 내의 두 멤버 사이의 최단 거리를 계산하고, 그에 따른 BranchView를 반환합니다.
+     * @param treeId
+     * @param member
+     * @param leafId
+     * @return branchView(DTO)
+     */
     @Transactional
-    public BranchResponseDTO.branchView getBranchView(Long treeId, String token, Long leafId) {
-        Member member = memberQueryService.findByToken(token);
+    public BranchResponseDTO.branchView getBranchView(Long treeId, Member member, Long leafId) {
         Tree tree = treeQueryService.findById(treeId);
-        List<Branch> branches = branchQueryService.findAllBranchesInTree(treeId);
-        Long rootId = profileQueryService.getTreeProfile(member, tree).getId();
-        BranchResponseDTO.ShortestPathResult result = findShortestDistance(branches, rootId, leafId);
+        List<Branch> branches = branchQueryService.findAllBranchesInTree(treeId); // 해당 트리의 모든 Branch 조회
+        Long rootId = profileQueryService.getTreeProfile(member, tree).getId(); // 시작 노드 ID는 현재 사용자의 ID
+        BranchResponseDTO.ShortestPathResult result = findShortestDistance(branches, rootId, leafId); // 최단 거리 계산
 
         // Node 정보 생성
         List<BranchResponseDTO.NodeDTO> nodes = result.getPath().stream()
@@ -115,6 +136,12 @@ public BranchResponseDTO.branchView getBranchView(Long treeId, String token, Lon
         return branchConverter.toBranchView(nodes, links, rootId, leafId);
     }
 
+    /**
+     * 트리하우스 내의 모든 Branch를 조회하고, 그에 따른 전체 BranchView를 반환합니다.
+     * @param treeId
+     * @return branchView(DTO)
+     */
+
     @Transactional
     public BranchResponseDTO.branchView getCompleteBranchView(Long treeId) {
         List<Branch> branches = branchQueryService.findAllBranchesInTree(treeId);
diff --git a/src/main/java/org/example/tree/domain/invitation/controller/InvitationController.java b/src/main/java/org/example/tree/domain/invitation/controller/InvitationController.java
index 3423943..c06287c 100644
--- a/src/main/java/org/example/tree/domain/invitation/controller/InvitationController.java
+++ b/src/main/java/org/example/tree/domain/invitation/controller/InvitationController.java
@@ -1,11 +1,14 @@
 package org.example.tree.domain.invitation.controller;
 
 import io.swagger.v3.oas.annotations.Operation;
+import io.swagger.v3.oas.annotations.Parameter;
 import lombok.RequiredArgsConstructor;
 import org.example.tree.domain.invitation.dto.InvitationRequestDTO;
 import org.example.tree.domain.invitation.dto.InvitationResponseDTO;
 import org.example.tree.domain.invitation.service.InvitationService;
+import org.example.tree.domain.member.entity.Member;
 import org.example.tree.global.common.ApiResponse;
+import org.example.tree.global.security.handler.annotation.AuthMember;
 import org.springframework.web.bind.annotation.*;
 
 import java.util.List;
@@ -51,18 +54,16 @@ public ApiResponse<InvitationResponseDTO.rejectInvitation> rejectInvitation(
     @GetMapping("/users/invitation")
     @Operation(summary = "초대장 조회", description = "내가 받은 초대장을 조회합니다.")
     public ApiResponse<List<InvitationResponseDTO.getInvitation>> getInvitation(
-            @RequestHeader("Authorization") final String header
+            @AuthMember @Parameter(hidden = true) Member member
     ) {
-        String token = header.replace("Bearer ", "");
-        return ApiResponse.onSuccess(invitationService.getInvitation(token));
+        return ApiResponse.onSuccess(invitationService.getInvitation(member));
     }
 
     @GetMapping("/users/availableInvitation")
     @Operation(summary = "가용 초대장 조회", description = "내가 보낼 수 있는 초대장 개수를 조회합니다.")
     public ApiResponse<InvitationResponseDTO.getAvailableInvitation> getAvailableInvitation(
-            @RequestHeader("Authorization") final String header
+            @AuthMember @Parameter(hidden = true)  Member member
     ) {
-        String token = header.replace("Bearer ", "");
-        return ApiResponse.onSuccess(invitationService.getAvailableInvitation(token));
+        return ApiResponse.onSuccess(invitationService.getAvailableInvitation(member));
     }
 }
diff --git a/src/main/java/org/example/tree/domain/invitation/converter/InvitationConverter.java b/src/main/java/org/example/tree/domain/invitation/converter/InvitationConverter.java
index aaeb875..1130210 100644
--- a/src/main/java/org/example/tree/domain/invitation/converter/InvitationConverter.java
+++ b/src/main/java/org/example/tree/domain/invitation/converter/InvitationConverter.java
@@ -2,6 +2,7 @@
 
 import org.example.tree.domain.invitation.dto.InvitationResponseDTO;
 import org.example.tree.domain.invitation.entity.Invitation;
+import org.example.tree.domain.invitation.entity.InvitationStatus;
 import org.example.tree.domain.member.entity.Member;
 import org.example.tree.domain.profile.entity.Profile;
 import org.example.tree.domain.tree.entity.Tree;
@@ -17,6 +18,7 @@ public Invitation toInvitation (Profile sender, Tree tree, String phone) {
                 .sender(sender)
                 .tree(tree)
                 .phone(phone)
+                .status(InvitationStatus.PENDING)
                 .build();
     }
 
diff --git a/src/main/java/org/example/tree/domain/invitation/service/InvitationService.java b/src/main/java/org/example/tree/domain/invitation/service/InvitationService.java
index a6ca87e..9207052 100644
--- a/src/main/java/org/example/tree/domain/invitation/service/InvitationService.java
+++ b/src/main/java/org/example/tree/domain/invitation/service/InvitationService.java
@@ -73,14 +73,12 @@ public InvitationResponseDTO.rejectInvitation rejectInvitation(InvitationRequest
     }
 
     @Transactional
-    public InvitationResponseDTO.getAvailableInvitation getAvailableInvitation(String token) {
-        Member member = memberQueryService.findByToken(token);
+    public InvitationResponseDTO.getAvailableInvitation getAvailableInvitation(Member member) {
         return invitationConverter.toGetAvailableInvitation(member);
     }
 
     @Transactional
-    public List<InvitationResponseDTO.getInvitation> getInvitation(String token) {
-        Member member = memberQueryService.findByToken(token);
+    public List<InvitationResponseDTO.getInvitation> getInvitation(Member member) {
         List<Invitation> invitations= invitationQueryService.findAllByPhone(member.getPhone());
         return invitations.stream()
                 .map(invitation -> {
diff --git a/src/main/java/org/example/tree/domain/notification/controller/NotificationController.java b/src/main/java/org/example/tree/domain/notification/controller/NotificationController.java
index 8e88d2b..b09bf8d 100644
--- a/src/main/java/org/example/tree/domain/notification/controller/NotificationController.java
+++ b/src/main/java/org/example/tree/domain/notification/controller/NotificationController.java
@@ -1,11 +1,14 @@
 package org.example.tree.domain.notification.controller;
 
 import io.swagger.v3.oas.annotations.Operation;
+import io.swagger.v3.oas.annotations.Parameter;
 import lombok.RequiredArgsConstructor;
+import org.example.tree.domain.member.entity.Member;
 import org.example.tree.domain.notification.dto.NotificationRequestDTO;
 import org.example.tree.domain.notification.dto.NotificationResponseDTO;
 import org.example.tree.domain.notification.service.NotificationService;
 import org.example.tree.global.common.ApiResponse;
+import org.example.tree.global.security.handler.annotation.AuthMember;
 import org.springframework.web.bind.annotation.*;
 
 import java.util.List;
@@ -29,10 +32,9 @@ public ApiResponse sendNotification(
     @Operation(summary = "전체 알림 조회", description = "유저가 받은 알림들을 조회합니다.")
     @GetMapping
     public ApiResponse<List<NotificationResponseDTO.getNotification>> getNotifications(
-            @RequestHeader("Authorization") final String header)
-    {
-        String token = header.replace("Bearer ", "");
-        return ApiResponse.onSuccess(notificationService.getUserNotifications(token));
+            @AuthMember @Parameter(hidden = true) Member member
+    ) {
+        return ApiResponse.onSuccess(notificationService.getUserNotifications(member));
     }
 
     @Operation(summary = "특정 알림 조회", description = "유저가 받은 알림 중 하나를 조회합니다.")
diff --git a/src/main/java/org/example/tree/domain/notification/service/NotificationService.java b/src/main/java/org/example/tree/domain/notification/service/NotificationService.java
index a8b5c82..f464502 100644
--- a/src/main/java/org/example/tree/domain/notification/service/NotificationService.java
+++ b/src/main/java/org/example/tree/domain/notification/service/NotificationService.java
@@ -55,8 +55,7 @@ public void invitationNotification(Profile sender, Invitation invitation, String
         notificationCommandService.createNotification(notification);
     }
 
-    public List<NotificationResponseDTO.getNotification> getUserNotifications(String token) {
-        Member member = memberQueryService.findByToken(token);
+    public List<NotificationResponseDTO.getNotification> getUserNotifications(Member member) {
         List<Notification> notifications = notificationQueryService.getNotifications(member);
         return notifications.stream()
                 .map(notificationConverter::toGetNotification)
diff --git a/src/main/java/org/example/tree/domain/post/controller/PostController.java b/src/main/java/org/example/tree/domain/post/controller/PostController.java
index 2c3cecb..2182ff7 100644
--- a/src/main/java/org/example/tree/domain/post/controller/PostController.java
+++ b/src/main/java/org/example/tree/domain/post/controller/PostController.java
@@ -23,6 +23,7 @@ public class PostController {
     private final PostService postService;
 
     @PostMapping("/trees/{treeId}/feed/posts")
+    @Operation(summary = "게시글 작성", description = "게시글을 작성합니다.")
     public ApiResponse<PostResponseDTO.createPost> createPost(
             @PathVariable final Long treeId,
             @RequestBody final PostRequestDTO.createPost request,
diff --git a/src/main/java/org/example/tree/domain/profile/controller/ProfileController.java b/src/main/java/org/example/tree/domain/profile/controller/ProfileController.java
index a24f9a1..9d2146a 100644
--- a/src/main/java/org/example/tree/domain/profile/controller/ProfileController.java
+++ b/src/main/java/org/example/tree/domain/profile/controller/ProfileController.java
@@ -1,11 +1,14 @@
 package org.example.tree.domain.profile.controller;
 
 import io.swagger.v3.oas.annotations.Operation;
+import io.swagger.v3.oas.annotations.Parameter;
 import lombok.RequiredArgsConstructor;
+import org.example.tree.domain.member.entity.Member;
 import org.example.tree.domain.profile.dto.ProfileRequestDTO;
 import org.example.tree.domain.profile.service.ProfileService;
 import org.example.tree.domain.tree.dto.TreeRequestDTO;
 import org.example.tree.global.common.ApiResponse;
+import org.example.tree.global.security.handler.annotation.AuthMember;
 import org.springframework.http.MediaType;
 import org.springframework.web.bind.annotation.*;
 import org.springframework.web.multipart.MultipartFile;
@@ -34,20 +37,18 @@ public ApiResponse registerTreeMember(
     @GetMapping("/trees/{treeId}/members/{profileId}") //프로필 조회
     @Operation(summary = "멤버 프로필 조회", description = "트리하우스 속 특정 멤버의 프로필을 조회합니다.")
     public ApiResponse getProfileDetails(
-            @RequestHeader("Authorization") final String header,
+            @AuthMember @Parameter(hidden = true) Member member,
             @PathVariable Long treeId,
             @PathVariable Long profileId) {
-        String token = header.replace("Bearer ", "");
-        return ApiResponse.onSuccess(profileService.getProfileDetails(token, profileId));
+        return ApiResponse.onSuccess(profileService.getProfileDetails(member, profileId));
     }
 
     @GetMapping("/trees/{treeId}/myProfile") //내 프로필 조회
     @Operation(summary = "내 프로필 조회", description = "트리하우스 속 내 프로필을 조회합니다.")
     public ApiResponse getMyProfile(
-            @RequestHeader("Authorization") final String header,
+            @AuthMember @Parameter(hidden = true) Member member,
             @PathVariable Long treeId
     ) {
-        String token = header.replace("Bearer ", "");
-        return ApiResponse.onSuccess(profileService.getMyProfile(token, treeId));
+        return ApiResponse.onSuccess(profileService.getMyProfile(member, treeId));
     }
 }
diff --git a/src/main/java/org/example/tree/domain/profile/service/ProfileService.java b/src/main/java/org/example/tree/domain/profile/service/ProfileService.java
index ee4db62..b6e4549 100644
--- a/src/main/java/org/example/tree/domain/profile/service/ProfileService.java
+++ b/src/main/java/org/example/tree/domain/profile/service/ProfileService.java
@@ -75,9 +75,14 @@ public Profile getTreeProfile(Member member, Long treeId) {
         return profileQueryService.getTreeProfile(member,tree);
     }
 
+    /**
+     * 트리하우스 내 다른 멤버의 프로필 조회
+     * @param member //본인
+     * @param profileId //조회할 프로필의 id
+     * @return ProfileResponseDTO.getProfileDetails //프로필 조회 결과
+     */
     @Transactional
-    public ProfileResponseDTO.getProfileDetails getProfileDetails(String token, Long profileId) {
-        Member member = memberQueryService.findByToken(token);
+    public ProfileResponseDTO.getProfileDetails getProfileDetails(Member member, Long profileId) {
         Profile profile = profileQueryService.findById(profileId);
         Tree tree = profile.getTree();
         Profile myProfile = profileQueryService.getTreeProfile(member,tree);
@@ -86,9 +91,14 @@ public ProfileResponseDTO.getProfileDetails getProfileDetails(String token, Long
         return profileConverter.toGetProfileDetails(profile, treeIds, branchDegree);
     }
 
+    /**
+     * 내 프로필 조회
+     * @param member //본인
+     * @param treeId //조회할 트리하우스의 id
+     * @return ProfileResponseDTO.getProfileDetails //프로필 조회 결과
+     */
     @Transactional
-    public ProfileResponseDTO.getProfileDetails getMyProfile(String token, Long treeId) {
-        Member member = memberQueryService.findByToken(token);
+    public ProfileResponseDTO.getProfileDetails getMyProfile(Member member, Long treeId) {
         Tree tree = treeQueryService.findById(treeId);
         Profile profile = profileQueryService.getTreeProfile(member,tree);
         List<Long> treeIds = profileQueryService.findJoinedTree(profile);
diff --git a/src/main/java/org/example/tree/domain/tree/controller/TreeController.java b/src/main/java/org/example/tree/domain/tree/controller/TreeController.java
index f0a071c..164784a 100644
--- a/src/main/java/org/example/tree/domain/tree/controller/TreeController.java
+++ b/src/main/java/org/example/tree/domain/tree/controller/TreeController.java
@@ -1,11 +1,14 @@
 package org.example.tree.domain.tree.controller;
 
 import io.swagger.v3.oas.annotations.Operation;
+import io.swagger.v3.oas.annotations.Parameter;
 import lombok.RequiredArgsConstructor;
+import org.example.tree.domain.member.entity.Member;
 import org.example.tree.domain.tree.dto.TreeRequestDTO;
 import org.example.tree.domain.tree.dto.TreeResponseDTO;
 import org.example.tree.domain.tree.service.TreeService;
 import org.example.tree.global.common.ApiResponse;
+import org.example.tree.global.security.handler.annotation.AuthMember;
 import org.springframework.web.bind.annotation.*;
 
 import java.util.List;
@@ -28,21 +31,18 @@ public ApiResponse createTree(
     @Operation(summary = "트리하우스 조회")
     @GetMapping
     public ApiResponse<List<TreeResponseDTO.getTree>> getTrees(
-            @RequestHeader("Authorization") final String header
-    )
-     {
-         String token = header.replace("Bearer ", "");
-         return ApiResponse.onSuccess(treeService.getTrees(token));
+            @AuthMember @Parameter(hidden = true) Member member
+    ) {
+         return ApiResponse.onSuccess(treeService.getTrees(member));
     }
 
     @Operation(summary = "트리하우스 위치 변경")
     @PostMapping("/{treeId}")
     public ApiResponse<TreeResponseDTO.shiftTree> shiftTree(
-            @RequestHeader("Authorization") final String header,
+            @AuthMember @Parameter(hidden = true) Member member,
             @PathVariable final Long treeId
     ) {
-        String token = header.replace("Bearer ", "");
-        return ApiResponse.onSuccess(treeService.shiftTree(treeId, token));
+        return ApiResponse.onSuccess(treeService.shiftTree(treeId, member));
     }
 
 }
diff --git a/src/main/java/org/example/tree/domain/tree/service/TreeService.java b/src/main/java/org/example/tree/domain/tree/service/TreeService.java
index 2274816..220d7b6 100644
--- a/src/main/java/org/example/tree/domain/tree/service/TreeService.java
+++ b/src/main/java/org/example/tree/domain/tree/service/TreeService.java
@@ -31,8 +31,7 @@ public void createTree(TreeRequestDTO.createTree request) {
     }
 
     @Transactional
-    public List<TreeResponseDTO.getTree> getTrees(String token) {
-        Member member = memberQueryService.findByToken(token);
+    public List<TreeResponseDTO.getTree> getTrees(Member member) {
         Profile currentProfile = profileQueryService.getCurrentProfile(member);
         List<Long> treeIds = profileQueryService.findJoinedTree(currentProfile);
         List<Tree> trees = treeIds.stream()
@@ -51,8 +50,7 @@ public List<TreeResponseDTO.getTree> getTrees(String token) {
     }
 
     @Transactional
-    public TreeResponseDTO.shiftTree shiftTree(Long treeId, String token) {
-        Member member = memberQueryService.findByToken(token);
+    public TreeResponseDTO.shiftTree shiftTree(Long treeId, Member member) {
         Tree tree = treeQueryService.findById(treeId);
         Profile currentProfile = profileQueryService.getCurrentProfile(member);
         currentProfile.inactivate();
diff --git a/src/main/java/org/example/tree/global/config/GlobalWebConfig.java b/src/main/java/org/example/tree/global/config/GlobalWebConfig.java
index c223e09..46d7b0f 100644
--- a/src/main/java/org/example/tree/global/config/GlobalWebConfig.java
+++ b/src/main/java/org/example/tree/global/config/GlobalWebConfig.java
@@ -14,6 +14,10 @@ public class GlobalWebConfig implements WebMvcConfigurer {
 
     private final AuthMemberArgumentResolver authMemberArgumentResolver;
 
+    /**
+     * 컨트롤러 메서드의 특정 파라미터를 지원하는 커스텀한 ArgumentResolver를 추가
+     * @param resolverList
+     */
     @Override
     public void addArgumentResolvers(List<HandlerMethodArgumentResolver> resolverList) {
         resolverList.add(authMemberArgumentResolver);
diff --git a/src/main/java/org/example/tree/global/security/config/SecurityConfig.java b/src/main/java/org/example/tree/global/security/config/SecurityConfig.java
index 55c2645..8190fb9 100644
--- a/src/main/java/org/example/tree/global/security/config/SecurityConfig.java
+++ b/src/main/java/org/example/tree/global/security/config/SecurityConfig.java
@@ -37,6 +37,10 @@ public class SecurityConfig {
     private final JwtAuthenticationExceptionHandler jwtAuthenticationExceptionHandler =
             new JwtAuthenticationExceptionHandler();
 
+    /**
+     * 특정 경로에 대한 보안 설정을 무시하도록 설정
+     * @return WebSecurityCustomizer
+     */
     @Bean
     public WebSecurityCustomizer webSecurityCustomizer() {
         return (web) ->
@@ -83,10 +87,10 @@ public CorsConfigurationSource corsConfiguration() {
         return request -> {
             org.springframework.web.cors.CorsConfiguration config =
                     new org.springframework.web.cors.CorsConfiguration();
-            config.setAllowedHeaders(Collections.singletonList("*"));
-            config.setAllowedMethods(Collections.singletonList("*"));
-            config.setAllowedOriginPatterns(Collections.singletonList("*"));
-            config.setAllowCredentials(true);
+            config.setAllowedHeaders(Collections.singletonList("*")); // 모든 헤더 허용
+            config.setAllowedMethods(Collections.singletonList("*")); // 모든 메소드 허용
+            config.setAllowedOriginPatterns(Collections.singletonList("*")); // 모든 Origin 허용
+            config.setAllowCredentials(true);   // 인증정보 허용
             return config;
         };
     }
diff --git a/src/main/java/org/example/tree/global/security/filter/JwtAuthFilter.java b/src/main/java/org/example/tree/global/security/filter/JwtAuthFilter.java
index 9b08e43..97d3a31 100644
--- a/src/main/java/org/example/tree/global/security/filter/JwtAuthFilter.java
+++ b/src/main/java/org/example/tree/global/security/filter/JwtAuthFilter.java
@@ -39,7 +39,7 @@ protected void doFilterInternal(HttpServletRequest request, HttpServletResponse
         if(StringUtils.hasText(accessToken) && tokenProvider.validateToken(accessToken)) {
 
             Authentication authentication = tokenProvider.getAuthentication(accessToken);
-            SecurityContextHolder.getContext().setAuthentication(authentication);
+            SecurityContextHolder.getContext().setAuthentication(authentication); // 인증 정보를 SecurityContext에 설정
 
         }
         else{
diff --git a/src/main/java/org/example/tree/global/security/handler/annotation/AuthMember.java b/src/main/java/org/example/tree/global/security/handler/annotation/AuthMember.java
index 3725a18..b9279c1 100644
--- a/src/main/java/org/example/tree/global/security/handler/annotation/AuthMember.java
+++ b/src/main/java/org/example/tree/global/security/handler/annotation/AuthMember.java
@@ -5,7 +5,7 @@
 import java.lang.annotation.RetentionPolicy;
 import java.lang.annotation.Target;
 
-@Retention(RetentionPolicy.RUNTIME)
-@Target(ElementType.PARAMETER)
+@Retention(RetentionPolicy.RUNTIME) // 런타임 중에 어노테이션 정보를 조회하고 처리할 수 있도록 설정
+@Target(ElementType.PARAMETER) // 어노테이션을 파라미터에만 적용
 public @interface AuthMember {
 }
diff --git a/src/main/java/org/example/tree/global/security/handler/annotation/resolver/AuthMemberArgumentResolver.java b/src/main/java/org/example/tree/global/security/handler/annotation/resolver/AuthMemberArgumentResolver.java
index 2b733f5..c3e65a8 100644
--- a/src/main/java/org/example/tree/global/security/handler/annotation/resolver/AuthMemberArgumentResolver.java
+++ b/src/main/java/org/example/tree/global/security/handler/annotation/resolver/AuthMemberArgumentResolver.java
@@ -19,9 +19,15 @@
 @Component
 @RequiredArgsConstructor
 public class AuthMemberArgumentResolver implements HandlerMethodArgumentResolver {
+
+    /**
+     * supportsParameter
+     * - 해당 파라미터를 지원하는지 여부를 반환
+     * - AuthMember 어노테이션이 없거나, Member 타입이 아닌 경우 false 반환
+     */
     @Override
     public boolean supportsParameter(MethodParameter parameter) {
-        AuthMember authUser = parameter.getParameterAnnotation(AuthMember.class);
+        AuthMember authUser = parameter.getParameterAnnotation(AuthMember.class); // 메서드 파라미터에서 @AuthMember 찾기
         if (authUser == null) return false;
         if (parameter.getParameterType().equals(Member.class) == false) {
             return false;
@@ -29,6 +35,12 @@ public boolean supportsParameter(MethodParameter parameter) {
         return true;
     }
 
+    /**
+     * resolveArgument
+     * 실제로 파라미터의 값을 해석해주는 메서드
+     *  파라미터에 전달할 객체를 반환
+     * - SecurityContextHolder에서 인증 객체를 가져와서 Member 객체로 변환하여 반환
+     */
     @Override
     public Object resolveArgument(MethodParameter parameter, ModelAndViewContainer mavContainer, NativeWebRequest webRequest, WebDataBinderFactory binderFactory) throws Exception {
         Object principal = null;
@@ -37,7 +49,7 @@ public Object resolveArgument(MethodParameter parameter, ModelAndViewContainer m
         if (authentication != null) {
             principal = authentication.getPrincipal();
         }
-        if (principal == null || principal.getClass() == String.class) {
+        if (principal == null || principal.getClass() == String.class) { //Authentication 객체가 null이거나, principal이 String 타입('anonymousUser')인 경우
             throw new GeneralException(GlobalErrorCode.MEMBER_NOT_FOUND);
         }
 
diff --git a/src/main/java/org/example/tree/global/security/jwt/RefreshToken.java b/src/main/java/org/example/tree/global/security/jwt/RefreshToken.java
index c3f2e96..bf173e9 100644
--- a/src/main/java/org/example/tree/global/security/jwt/RefreshToken.java
+++ b/src/main/java/org/example/tree/global/security/jwt/RefreshToken.java
@@ -14,9 +14,4 @@ public class RefreshToken {
     private String memberId;
 
     private String token;
-
-    public RefreshToken updateValue(String token) {
-        this.token = token;
-        return this;
-    }
 }