diff --git a/src/main/java/com/example/bigbrotherbe/auth/jwt/entity/JwtToken.java b/src/main/java/com/example/bigbrotherbe/auth/jwt/dto/response/JwtToken.java
similarity index 80%
rename from src/main/java/com/example/bigbrotherbe/auth/jwt/entity/JwtToken.java
rename to src/main/java/com/example/bigbrotherbe/auth/jwt/dto/response/JwtToken.java
index f50ef86..226a284 100644
--- a/src/main/java/com/example/bigbrotherbe/auth/jwt/entity/JwtToken.java
+++ b/src/main/java/com/example/bigbrotherbe/auth/jwt/dto/response/JwtToken.java
@@ -1,4 +1,4 @@
-package com.example.bigbrotherbe.auth.jwt.entity;
+package com.example.bigbrotherbe.auth.jwt.dto.response;
 
 import lombok.AllArgsConstructor;
 import lombok.Builder;
diff --git a/src/main/java/com/example/bigbrotherbe/auth/jwt/service/JwtTokenService.java b/src/main/java/com/example/bigbrotherbe/auth/jwt/service/JwtTokenService.java
index 8182306..96c5001 100644
--- a/src/main/java/com/example/bigbrotherbe/auth/jwt/service/JwtTokenService.java
+++ b/src/main/java/com/example/bigbrotherbe/auth/jwt/service/JwtTokenService.java
@@ -7,7 +7,7 @@
 
 import com.example.bigbrotherbe.common.exception.BusinessException;
 import com.example.bigbrotherbe.common.exception.enums.ErrorCode;
-import com.example.bigbrotherbe.auth.jwt.entity.JwtToken;
+import com.example.bigbrotherbe.auth.jwt.dto.response.JwtToken;
 import com.example.bigbrotherbe.auth.jwt.dto.TokenDto;
 import com.example.bigbrotherbe.auth.custom.CustomUserDetailsService;
 import io.jsonwebtoken.Claims;
@@ -36,6 +36,7 @@
 @Slf4j
 @Component
 public class JwtTokenService {
+
     private final Key key;
     private static final long ACCESS_TIME = 10 * 60 * 1000L; // 10분
     private static final long REFRESH_TIME = 30 * 60 * 1000L; //30분
@@ -51,8 +52,9 @@ public JwtTokenService(@Value("${jwt.secret}") String secretKey, CustomUserDetai
     // Member 정보를 가지고 Access Token, RefreshToken을 생성하는 메서드
     public JwtToken generateToken(Authentication authentication) {
         // 권한 가져오기
-        String authorities = authentication.getAuthorities().stream().map(GrantedAuthority::getAuthority).collect(
-                Collectors.joining(","));
+        String authorities = authentication.getAuthorities().stream()
+                .map(GrantedAuthority::getAuthority)
+                .collect(Collectors.joining(","));
 
         TokenDto tokenDto = createAllToken(authentication.getName(), authorities);
 
@@ -63,18 +65,6 @@ public JwtToken generateToken(Authentication authentication) {
                 .build();
     }
 
-    private String createToken(String email, String authorities, String type) {
-        long now = new Date().getTime();
-        long expiration = type.equals("Access") ? ACCESS_TIME : REFRESH_TIME;
-        return Jwts.builder()
-                .setSubject(email)
-                .claim("auth", authorities)
-                .claim("type", type)
-                .setExpiration(new Date(now + expiration))
-                .signWith(key, SignatureAlgorithm.HS256)
-                .compact();
-    }
-
     public Authentication getAuthentication(String token) {
         Claims claims = parseClaims(token);
         log.info("Parsed claims: {}", claims);
@@ -82,14 +72,14 @@ public Authentication getAuthentication(String token) {
             throw new RuntimeException("권한 정보가 없는 토큰입니다.");
         }
         UserDetails principal = customerDetailsService.loadUserByUsername(
-            claims.getSubject());
+                claims.getSubject());
         return new UsernamePasswordAuthenticationToken(principal, "", principal.getAuthorities());
     }
 
     public boolean validateToken(String token) {
 
         try {
-        Jwts.parserBuilder()
+            Jwts.parserBuilder()
                     .setSigningKey(key)
                     .build()
                     .parseClaimsJws(token)
@@ -123,18 +113,6 @@ public boolean checkTokenType(String token) {
     }
 
 
-    private Claims parseClaims(String accessToken) {
-        try {
-            return Jwts.parserBuilder()
-                    .setSigningKey(key)
-                    .build()
-                    .parseClaimsJws(accessToken)
-                    .getBody();
-        } catch (ExpiredJwtException e) {
-            return e.getClaims();
-        }
-    }
-
     public String createTokenByRefreshToken(String refreshToken) {
         Claims claims = getAllClaimsFromToken(refreshToken);
         Date now = new Date();
@@ -152,13 +130,6 @@ public TokenDto createAllToken(String email, String role) {
         return new TokenDto(createToken(email, role, ACCESS_TOKEN), createToken(email, role, REFRESH_TOKEN));
     }
 
-    private Claims getAllClaimsFromToken(String token) {
-        return Jwts.parserBuilder()
-                .setSigningKey(key)
-                .build()
-                .parseClaimsJws(token)
-                .getBody();
-    }
 
     public TokenDto refreshAccessToken(String refreshToken) {
 
@@ -184,4 +155,36 @@ private String resolveToken(String token) {
         throw new BusinessException(ErrorCode.ILLEGAL_HEADER_PATTERN);
     }
 
+    private String createToken(String email, String authorities, String type) {
+        long now = new Date().getTime();
+        long expiration = type.equals("Access") ? ACCESS_TIME : REFRESH_TIME;
+
+        return Jwts.builder()
+                .setSubject(email)
+                .claim("auth", authorities)
+                .claim("type", type)
+                .setExpiration(new Date(now + expiration))
+                .signWith(key, SignatureAlgorithm.HS256)
+                .compact();
+    }
+
+    private Claims getAllClaimsFromToken(String token) {
+        return Jwts.parserBuilder()
+                .setSigningKey(key)
+                .build()
+                .parseClaimsJws(token)
+                .getBody();
+    }
+
+    private Claims parseClaims(String accessToken) {
+        try {
+            return Jwts.parserBuilder()
+                    .setSigningKey(key)
+                    .build()
+                    .parseClaimsJws(accessToken)
+                    .getBody();
+        } catch (ExpiredJwtException e) {
+            return e.getClaims();
+        }
+    }
 }
diff --git a/src/main/java/com/example/bigbrotherbe/auth/util/AuthUtil.java b/src/main/java/com/example/bigbrotherbe/auth/util/AuthUtil.java
index 01f1d3c..a0ea986 100644
--- a/src/main/java/com/example/bigbrotherbe/auth/util/AuthUtil.java
+++ b/src/main/java/com/example/bigbrotherbe/auth/util/AuthUtil.java
@@ -5,7 +5,7 @@
 import com.example.bigbrotherbe.domain.member.repository.AffiliationMemberRepository;
 import com.example.bigbrotherbe.domain.member.repository.AffiliationRepository;
 import com.example.bigbrotherbe.domain.member.repository.MemberRepository;
-import com.example.bigbrotherbe.auth.jwt.entity.JwtToken;
+import com.example.bigbrotherbe.auth.jwt.dto.response.JwtToken;
 
 import java.util.List;
 
@@ -90,8 +90,8 @@ public Long getAffiliationIdByMemberId(Long memberId, String affiliation) {
 
 
     public JwtToken createAuthenticationToken(String email, String password) {
-        UsernamePasswordAuthenticationToken authenticationToken = new UsernamePasswordAuthenticationToken(email, password);
         try {
+            UsernamePasswordAuthenticationToken authenticationToken = new UsernamePasswordAuthenticationToken(email, password);
             Authentication authentication = authenticationManagerBuilder.getObject()
                     .authenticate(authenticationToken);
             return jwtTokenService.generateToken(authentication);
diff --git a/src/main/java/com/example/bigbrotherbe/domain/campusNotice/service/CampusNoticeServiceImpl.java b/src/main/java/com/example/bigbrotherbe/domain/campusNotice/service/CampusNoticeServiceImpl.java
index 74f03f8..afa1377 100644
--- a/src/main/java/com/example/bigbrotherbe/domain/campusNotice/service/CampusNoticeServiceImpl.java
+++ b/src/main/java/com/example/bigbrotherbe/domain/campusNotice/service/CampusNoticeServiceImpl.java
@@ -23,6 +23,8 @@
 import java.util.ArrayList;
 import java.util.List;
 
+import static com.example.bigbrotherbe.common.exception.enums.ErrorCode.*;
+
 @Service
 @RequiredArgsConstructor
 public class CampusNoticeServiceImpl implements CampusNoticeService {
diff --git a/src/main/java/com/example/bigbrotherbe/domain/event/service/EventServiceImpl.java b/src/main/java/com/example/bigbrotherbe/domain/event/service/EventServiceImpl.java
index 9710f49..5ac3a99 100644
--- a/src/main/java/com/example/bigbrotherbe/domain/event/service/EventServiceImpl.java
+++ b/src/main/java/com/example/bigbrotherbe/domain/event/service/EventServiceImpl.java
@@ -26,6 +26,8 @@
 
 import java.util.List;
 
+import static com.example.bigbrotherbe.common.exception.enums.ErrorCode.*;
+
 @Service
 @RequiredArgsConstructor
 public class EventServiceImpl implements EventService {
diff --git a/src/main/java/com/example/bigbrotherbe/domain/faq/service/FAQServiceImpl.java b/src/main/java/com/example/bigbrotherbe/domain/faq/service/FAQServiceImpl.java
index 6f83170..24268f8 100644
--- a/src/main/java/com/example/bigbrotherbe/domain/faq/service/FAQServiceImpl.java
+++ b/src/main/java/com/example/bigbrotherbe/domain/faq/service/FAQServiceImpl.java
@@ -25,6 +25,8 @@
 
 import java.util.List;
 
+import static com.example.bigbrotherbe.common.exception.enums.ErrorCode.*;
+
 @Service
 @RequiredArgsConstructor
 public class FAQServiceImpl implements FAQService {
@@ -70,7 +72,7 @@ public void register(FAQRegisterRequest faqRegisterRequest, List<MultipartFile>
     @Transactional(rollbackFor = Exception.class)
     public void modify(Long faqId, FAQModifyRequest faqModifyRequest, List<MultipartFile> multipartFiles) {
         FAQ faq = faqRepository.findById(faqId)
-                .orElseThrow(() -> new BusinessException(ErrorCode.NO_EXIST_FAQ));
+                .orElseThrow(() -> new BusinessException(NO_EXIST_FAQ));
 
         if (authUtil.checkCouncilRole(faq.getAffiliationId())) {
             throw new BusinessException(NOT_COUNCIL_MEMBER);
@@ -94,7 +96,7 @@ public void modify(Long faqId, FAQModifyRequest faqModifyRequest, List<Multipart
     @Transactional(rollbackFor = Exception.class)
     public void delete(Long faqId) {
         FAQ faq = faqRepository.findById(faqId)
-                .orElseThrow(() -> new BusinessException(ErrorCode.NO_EXIST_FAQ));
+                .orElseThrow(() -> new BusinessException(NO_EXIST_FAQ));
 
         if (authUtil.checkCouncilRole(faq.getAffiliationId())) {
             throw new BusinessException(NOT_COUNCIL_MEMBER);
diff --git a/src/main/java/com/example/bigbrotherbe/domain/meetings/service/MeetingsServiceImpl.java b/src/main/java/com/example/bigbrotherbe/domain/meetings/service/MeetingsServiceImpl.java
index 1afed48..a933000 100644
--- a/src/main/java/com/example/bigbrotherbe/domain/meetings/service/MeetingsServiceImpl.java
+++ b/src/main/java/com/example/bigbrotherbe/domain/meetings/service/MeetingsServiceImpl.java
@@ -26,6 +26,8 @@
 
 import java.util.List;
 
+import static com.example.bigbrotherbe.common.exception.enums.ErrorCode.*;
+
 @Service
 @RequiredArgsConstructor
 public class MeetingsServiceImpl implements MeetingsService {
diff --git a/src/main/java/com/example/bigbrotherbe/domain/member/component/MemberManager.java b/src/main/java/com/example/bigbrotherbe/domain/member/component/MemberManager.java
index c384cc5..b05b362 100644
--- a/src/main/java/com/example/bigbrotherbe/domain/member/component/MemberManager.java
+++ b/src/main/java/com/example/bigbrotherbe/domain/member/component/MemberManager.java
@@ -10,7 +10,7 @@
 import com.example.bigbrotherbe.domain.member.dto.AffiliationListDto;
 import com.example.bigbrotherbe.domain.member.entity.AffiliationMember;
 import com.example.bigbrotherbe.auth.util.AuthUtil;
-import com.example.bigbrotherbe.auth.jwt.entity.JwtToken;
+import com.example.bigbrotherbe.auth.jwt.dto.response.JwtToken;
 
 import java.util.List;
 import java.util.stream.Collectors;
diff --git a/src/main/java/com/example/bigbrotherbe/domain/member/controller/MemberController.java b/src/main/java/com/example/bigbrotherbe/domain/member/controller/MemberController.java
index 7c5c49d..7555e5a 100644
--- a/src/main/java/com/example/bigbrotherbe/domain/member/controller/MemberController.java
+++ b/src/main/java/com/example/bigbrotherbe/domain/member/controller/MemberController.java
@@ -10,7 +10,7 @@
 import com.example.bigbrotherbe.domain.member.dto.AffiliationListDto;
 import com.example.bigbrotherbe.email.entity.EmailRequest;
 import com.example.bigbrotherbe.email.entity.EmailVerificationResult;
-import com.example.bigbrotherbe.auth.jwt.entity.JwtToken;
+import com.example.bigbrotherbe.auth.jwt.dto.response.JwtToken;
 import com.example.bigbrotherbe.auth.jwt.dto.TokenDto;
 import com.example.bigbrotherbe.common.config.SecurityConfig;
 import io.swagger.v3.oas.annotations.Operation;
diff --git a/src/main/java/com/example/bigbrotherbe/domain/member/controller/MemberControllerImpl.java b/src/main/java/com/example/bigbrotherbe/domain/member/controller/MemberControllerImpl.java
index b27fe97..36c81e8 100644
--- a/src/main/java/com/example/bigbrotherbe/domain/member/controller/MemberControllerImpl.java
+++ b/src/main/java/com/example/bigbrotherbe/domain/member/controller/MemberControllerImpl.java
@@ -13,7 +13,7 @@
 import com.example.bigbrotherbe.email.entity.EmailVerificationResult;
 import com.example.bigbrotherbe.email.component.MailService;
 import com.example.bigbrotherbe.common.exception.response.ApiResponse;
-import com.example.bigbrotherbe.auth.jwt.entity.JwtToken;
+import com.example.bigbrotherbe.auth.jwt.dto.response.JwtToken;
 import com.example.bigbrotherbe.domain.member.service.MemberService;
 
 import com.example.bigbrotherbe.auth.jwt.service.JwtTokenService;
diff --git a/src/main/java/com/example/bigbrotherbe/domain/member/service/MemberService.java b/src/main/java/com/example/bigbrotherbe/domain/member/service/MemberService.java
index cdc2d54..def7fe3 100644
--- a/src/main/java/com/example/bigbrotherbe/domain/member/service/MemberService.java
+++ b/src/main/java/com/example/bigbrotherbe/domain/member/service/MemberService.java
@@ -4,7 +4,7 @@
 import com.example.bigbrotherbe.domain.member.dto.response.MemberInfoResponse;
 import com.example.bigbrotherbe.domain.member.dto.response.MemberResponse;
 import com.example.bigbrotherbe.domain.member.dto.AffiliationListDto;
-import com.example.bigbrotherbe.auth.jwt.entity.JwtToken;
+import com.example.bigbrotherbe.auth.jwt.dto.response.JwtToken;
 
 import java.util.List;
 
diff --git a/src/main/java/com/example/bigbrotherbe/domain/member/service/MemberServiceImpl.java b/src/main/java/com/example/bigbrotherbe/domain/member/service/MemberServiceImpl.java
index bbae49f..ce825d9 100644
--- a/src/main/java/com/example/bigbrotherbe/domain/member/service/MemberServiceImpl.java
+++ b/src/main/java/com/example/bigbrotherbe/domain/member/service/MemberServiceImpl.java
@@ -6,7 +6,7 @@
 import com.example.bigbrotherbe.domain.member.dto.response.MemberInfoResponse;
 import com.example.bigbrotherbe.domain.member.dto.response.MemberResponse;
 import com.example.bigbrotherbe.domain.member.dto.AffiliationListDto;
-import com.example.bigbrotherbe.auth.jwt.entity.JwtToken;
+import com.example.bigbrotherbe.auth.jwt.dto.response.JwtToken;
 import com.example.bigbrotherbe.domain.member.entity.Member;
 
 
diff --git a/src/main/java/com/example/bigbrotherbe/domain/notice/service/NoticeServiceImpl.java b/src/main/java/com/example/bigbrotherbe/domain/notice/service/NoticeServiceImpl.java
index 2e889ec..dd11918 100644
--- a/src/main/java/com/example/bigbrotherbe/domain/notice/service/NoticeServiceImpl.java
+++ b/src/main/java/com/example/bigbrotherbe/domain/notice/service/NoticeServiceImpl.java
@@ -26,6 +26,8 @@
 
 import java.util.List;
 
+import static com.example.bigbrotherbe.common.exception.enums.ErrorCode.*;
+
 @Service
 @RequiredArgsConstructor
 public class NoticeServiceImpl implements NoticeService {
@@ -72,7 +74,7 @@ public void register(NoticeRegisterRequest noticeRegisterRequest, List<Multipart
     @Transactional(rollbackFor = Exception.class)
     public void modify(Long noticeId, NoticeModifyRequest noticeModifyRequest, List<MultipartFile> multipartFiles) {
         Notice notice = noticeRepository.findById(noticeId)
-                .orElseThrow(() -> new BusinessException(ErrorCode.NO_EXIST_NOTICE));
+                .orElseThrow(() -> new BusinessException(NO_EXIST_NOTICE));
 
         if (authUtil.checkCouncilRole(notice.getAffiliationId())) {
             throw new BusinessException(NOT_COUNCIL_MEMBER);
@@ -96,7 +98,7 @@ public void modify(Long noticeId, NoticeModifyRequest noticeModifyRequest, List<
     @Transactional(rollbackFor = Exception.class)
     public void delete(Long noticeId) {
         Notice notice = noticeRepository.findById(noticeId)
-                .orElseThrow(() -> new BusinessException(ErrorCode.NO_EXIST_NOTICE));
+                .orElseThrow(() -> new BusinessException(NO_EXIST_NOTICE));
 
         if (authUtil.checkCouncilRole(notice.getAffiliationId())) {
             throw new BusinessException(NOT_COUNCIL_MEMBER);
diff --git a/src/main/java/com/example/bigbrotherbe/domain/rule/service/RuleServiceImpl.java b/src/main/java/com/example/bigbrotherbe/domain/rule/service/RuleServiceImpl.java
index 1f8cdda..98ab31a 100644
--- a/src/main/java/com/example/bigbrotherbe/domain/rule/service/RuleServiceImpl.java
+++ b/src/main/java/com/example/bigbrotherbe/domain/rule/service/RuleServiceImpl.java
@@ -26,6 +26,8 @@
 
 import java.util.List;
 
+import static com.example.bigbrotherbe.common.exception.enums.ErrorCode.*;
+
 @Service
 @RequiredArgsConstructor
 public class RuleServiceImpl implements RuleService {
diff --git a/src/main/java/com/example/bigbrotherbe/domain/transactions/service/TransactionsServiceImpl.java b/src/main/java/com/example/bigbrotherbe/domain/transactions/service/TransactionsServiceImpl.java
index d60b4d5..e7504e8 100644
--- a/src/main/java/com/example/bigbrotherbe/domain/transactions/service/TransactionsServiceImpl.java
+++ b/src/main/java/com/example/bigbrotherbe/domain/transactions/service/TransactionsServiceImpl.java
@@ -26,6 +26,8 @@
 import java.util.List;
 import java.util.stream.Collectors;
 
+import static com.example.bigbrotherbe.common.exception.enums.ErrorCode.*;
+
 
 @Service
 @RequiredArgsConstructor