diff --git a/backend/core/src/main/java/com/rollthedice/backend/global/oauth2/OAuthAttributes.java b/backend/core/src/main/java/com/rollthedice/backend/global/oauth2/OAuthAttributes.java
index f3aacaa1..2dfcb75c 100644
--- a/backend/core/src/main/java/com/rollthedice/backend/global/oauth2/OAuthAttributes.java
+++ b/backend/core/src/main/java/com/rollthedice/backend/global/oauth2/OAuthAttributes.java
@@ -41,7 +41,7 @@ public Member toEntity(SocialType socialType, OAuth2UserInfo oauth2UserInfo) {
                 .email(oauth2UserInfo.getEmail())
                 .nickname(oauth2UserInfo.getNickname())
                 .imageUrl(oauth2UserInfo.getImageUrl())
-                .role(Role.GUEST)
+                .role(Role.USER)
                 .status(Status.ACTIVE)
                 .build();
     }
diff --git a/backend/core/src/main/java/com/rollthedice/backend/global/oauth2/service/AuthService.java b/backend/core/src/main/java/com/rollthedice/backend/global/oauth2/service/AuthService.java
index 3d150356..85bcaef7 100644
--- a/backend/core/src/main/java/com/rollthedice/backend/global/oauth2/service/AuthService.java
+++ b/backend/core/src/main/java/com/rollthedice/backend/global/oauth2/service/AuthService.java
@@ -41,8 +41,8 @@ private Member registerMember(SocialType socialType, OAuth2UserInfo userInfo) {
         Member member = Member.builder()
                 .socialType(socialType)
                 .oauthId(userInfo.getId())
-                .email(UUID.randomUUID() + "@socialUser.com")
-                .nickname(String.valueOf(UUID.randomUUID()))
+                .email(userInfo.getEmail())
+                .nickname(userInfo.getNickname())
                 .imageUrl(userInfo.getImageUrl())
                 .role(Role.USER)
                 .build();
@@ -51,10 +51,9 @@ private Member registerMember(SocialType socialType, OAuth2UserInfo userInfo) {
     }
 
     public Member getMember() {
-
         Authentication authentication = SecurityContextHolder.getContext().getAuthentication();
-        UserDetails userDetails = (UserDetails) authentication.getPrincipal();
-        return memberRepository.findByEmail(userDetails.getUsername()).orElseThrow(MemberNotFoundException::new);
+        String username = authentication.getName();
+        return memberRepository.findByEmail(username).orElseThrow(MemberNotFoundException::new);
     }
 
 }