diff --git a/src/main/java/com/jeju/nanaland/domain/member/service/MemberLoginService.java b/src/main/java/com/jeju/nanaland/domain/member/service/MemberLoginService.java
index 1ef30b41..f8e91ae0 100644
--- a/src/main/java/com/jeju/nanaland/domain/member/service/MemberLoginService.java
+++ b/src/main/java/com/jeju/nanaland/domain/member/service/MemberLoginService.java
@@ -241,7 +241,7 @@ public JwtDto reissue(String bearerRefreshToken, String fcmToken) {
     String refreshToken = jwtUtil.resolveToken(bearerRefreshToken);
 
     if (!jwtUtil.verifyRefreshToken(refreshToken)) {
-      throw new UnauthorizedException(INVALID_TOKEN.getMessage());
+      throw new UnauthorizedException(INVALID_TOKEN.getMessage() + ": 리프레쉬토큰 유효하지 않음");
     }
 
     String memberId = jwtUtil.getMemberIdFromRefresh(refreshToken);
@@ -251,7 +251,7 @@ public JwtDto reissue(String bearerRefreshToken, String fcmToken) {
     if (!refreshToken.equals(savedRefreshToken)) {
       // RefreshToken 삭제 및 다시 로그인하도록 UNAUTHORIZED
       jwtUtil.deleteRefreshToken(memberId);
-      throw new UnauthorizedException(INVALID_TOKEN.getMessage());
+      throw new UnauthorizedException(INVALID_TOKEN.getMessage() + ": 재사용된 토큰인 경우");
     }
 
     Member member = memberRepository.findById(Long.valueOf(memberId))
@@ -337,7 +337,7 @@ public void forceWithdrawal(String bearerAccessToken) {
     String accessToken = jwtUtil.resolveToken(bearerAccessToken);
 
     if (!jwtUtil.verifyAccessToken(accessToken)) {
-      throw new UnauthorizedException(INVALID_TOKEN.getMessage());
+      throw new UnauthorizedException(INVALID_TOKEN.getMessage() + ": 액세스토큰 유효하지 않음");
     }
 
     String memberId = jwtUtil.getMemberIdFromAccess(accessToken);
diff --git a/src/main/java/com/jeju/nanaland/global/auth/AuthMemberArgumentResolver.java b/src/main/java/com/jeju/nanaland/global/auth/AuthMemberArgumentResolver.java
index 08ba114f..52d1351a 100644
--- a/src/main/java/com/jeju/nanaland/global/auth/AuthMemberArgumentResolver.java
+++ b/src/main/java/com/jeju/nanaland/global/auth/AuthMemberArgumentResolver.java
@@ -39,7 +39,7 @@ public Object resolveArgument(MethodParameter parameter, ModelAndViewContainer m
 
     // null이 아닌 경우, 로그아웃을 통해 이미 블랙리스트에 담긴 것을 의미
     if (redisUtil.getValue(accessToken) != null) {
-      throw new UnauthorizedException(ErrorCode.INVALID_TOKEN.getMessage());
+      throw new UnauthorizedException(ErrorCode.INVALID_TOKEN.getMessage() + ": 로그아웃된 액세스토큰");
     }
 
     String memberId = jwtUtil.getMemberIdFromAccess(accessToken);
diff --git a/src/test/java/com/jeju/nanaland/domain/member/service/MemberLoginServiceTest.java b/src/test/java/com/jeju/nanaland/domain/member/service/MemberLoginServiceTest.java
index fb1ae4cf..95875da7 100644
--- a/src/test/java/com/jeju/nanaland/domain/member/service/MemberLoginServiceTest.java
+++ b/src/test/java/com/jeju/nanaland/domain/member/service/MemberLoginServiceTest.java
@@ -482,7 +482,7 @@ void reissueFail_invalidToken() {
           () -> memberLoginService.reissue("bearer RefreshToken", ""));
 
       // then: ErrorCode 검증
-      assertThat(unauthorizedException.getMessage()).isEqualTo(ErrorCode.INVALID_TOKEN.getMessage());
+      assertThat(unauthorizedException.getMessage()).isEqualTo(ErrorCode.INVALID_TOKEN.getMessage() + ": 리프레쉬토큰 유효하지 않음");
     }
 
     @Test
@@ -499,7 +499,7 @@ void reissueFail_tokenDifferent() {
           () -> memberLoginService.reissue("bearer RefreshToken", ""));
 
       // then: ErrorCode 검증, RefreshToken 삭제 확인
-      assertThat(unauthorizedException.getMessage()).isEqualTo(ErrorCode.INVALID_TOKEN.getMessage());
+      assertThat(unauthorizedException.getMessage()).isEqualTo(ErrorCode.INVALID_TOKEN.getMessage() + ": 재사용된 토큰인 경우");
       verify(jwtUtil).deleteRefreshToken(any(String.class));
     }