diff --git a/src/main/java/com/example/codebase/domain/auth/OAuthAttributes.java b/src/main/java/com/example/codebase/domain/auth/OAuthAttributes.java
index 42b8d993..023f1d47 100644
--- a/src/main/java/com/example/codebase/domain/auth/OAuthAttributes.java
+++ b/src/main/java/com/example/codebase/domain/auth/OAuthAttributes.java
@@ -72,17 +72,4 @@ private static OAuthAttributes ofNaver(String userNameAttributeName,
                 .build();
     }
 
-    public Member toEntity(PasswordEncoder passwordEncoder) {
-        return Member.builder()
-                .username(oAuthProviderId)
-                .password(passwordEncoder.encode(UUID.randomUUID().toString()))
-                .name(name)
-                .email(email)
-                .picture(picture)
-                .oauthProvider(registrationId)
-                .oauthProviderId(oAuthProviderId)
-                .createdTime(LocalDateTime.now())
-                .activated(true)
-                .build();
-    }
 }
diff --git a/src/main/java/com/example/codebase/domain/auth/service/CustomOAuth2UserService.java b/src/main/java/com/example/codebase/domain/auth/service/CustomOAuth2UserService.java
index 40a81ee4..0dbb0f2d 100644
--- a/src/main/java/com/example/codebase/domain/auth/service/CustomOAuth2UserService.java
+++ b/src/main/java/com/example/codebase/domain/auth/service/CustomOAuth2UserService.java
@@ -52,8 +52,6 @@ public OAuth2User loadUser(OAuth2UserRequest userRequest) throws OAuth2Authentic
         try {
             Member member = saveOrUpdate(oAuthAttributes);
 
-
-
             List<SimpleGrantedAuthority> simpleGrantedAuthorityList = new ArrayList<>();
             for (MemberAuthority memberAuthority : member.getAuthorities()) {
                 simpleGrantedAuthorityList.add(new SimpleGrantedAuthority(memberAuthority.getAuthority().getAuthorityName()));
diff --git a/src/main/java/com/example/codebase/domain/member/entity/Member.java b/src/main/java/com/example/codebase/domain/member/entity/Member.java
index 66d18d46..65292765 100644
--- a/src/main/java/com/example/codebase/domain/member/entity/Member.java
+++ b/src/main/java/com/example/codebase/domain/member/entity/Member.java
@@ -2,6 +2,7 @@
 
 import com.example.codebase.domain.artwork.entity.Artwork;
 import com.example.codebase.domain.artwork.entity.ArtworkLikeMember;
+import com.example.codebase.domain.auth.OAuthAttributes;
 import com.example.codebase.domain.member.dto.CreateArtistMemberDTO;
 import com.example.codebase.domain.member.dto.UpdateMemberDTO;
 import com.example.codebase.domain.member.entity.oauth2.oAuthProvider;
@@ -9,6 +10,7 @@
 import org.hibernate.annotations.GenericGenerator;
 import org.springframework.security.core.authority.SimpleGrantedAuthority;
 import org.springframework.security.core.userdetails.User;
+import org.springframework.security.crypto.password.PasswordEncoder;
 
 import javax.persistence.*;
 import java.time.LocalDateTime;
@@ -109,6 +111,34 @@ public static User toUser(Member member) {
                 .collect(Collectors.toList()));
     }
 
+    public static Member from(PasswordEncoder passwordEncoder, OAuthAttributes oAuthAttributes) {
+        String username = generateUniqueUsername();
+
+        return Member.builder()
+                .username(username)
+                .password(passwordEncoder.encode(UUID.randomUUID().toString()))
+                .name(oAuthAttributes.getName())
+                .email(oAuthAttributes.getEmail())
+                .picture(oAuthAttributes.getPicture())
+                .oauthProvider(oAuthAttributes.getRegistrationId())
+                .oauthProviderId(oAuthAttributes.getOAuthProviderId())
+                .createdTime(LocalDateTime.now())
+                .activated(true)
+                .build();
+    }
+
+    private static String generateUniqueUsername() {
+        // UUID 생성
+        UUID uuid = UUID.randomUUID();
+
+        // UUID를 문자열로 변환하고 "-"를 제거하여 username 생성
+        String username = uuid.toString().replace("-", "");
+
+        // "@"를 앞에 추가
+        username = username.substring(0, 10); // 예시로 10자리만 사용
+        return "user-" + username;
+    }
+
     public Member update(String name, String picture) {
         this.name = name;
         this.picture = picture;
@@ -118,8 +148,7 @@ public Member update(String name, String picture) {
 
     public Member update(UpdateMemberDTO dto) {
         if (dto.getUsername() != null) {
-            this.username = dto.getUsername();
-        }
+            this.username = dto.getUsername();        }
         if (dto.getName() != null) {
             this.name = dto.getName();
         }
diff --git a/src/main/java/com/example/codebase/domain/member/service/MemberService.java b/src/main/java/com/example/codebase/domain/member/service/MemberService.java
index cc39d565..9a2280bb 100644
--- a/src/main/java/com/example/codebase/domain/member/service/MemberService.java
+++ b/src/main/java/com/example/codebase/domain/member/service/MemberService.java
@@ -118,12 +118,11 @@ public Member createOAuthMember(OAuthAttributes oAuthAttributes) {
             throw new ExistsEmailException();
         }
 
-
         // New Save
         Authority authority = new Authority();
         authority.setAuthorityName("ROLE_USER");
 
-        Member newMember = oAuthAttributes.toEntity(passwordEncoder);
+        Member newMember = Member.from(passwordEncoder, oAuthAttributes);
         MemberAuthority memberAuthority = MemberAuthority.builder()
                 .authority(authority)
                 .member(newMember)
diff --git a/src/main/resources/log/log4j2-dev.xml b/src/main/resources/log/log4j2-dev.xml
index 56e99a5d..84f90f28 100644
--- a/src/main/resources/log/log4j2-dev.xml
+++ b/src/main/resources/log/log4j2-dev.xml
@@ -16,12 +16,12 @@
             <PatternLayout disableAnsi="false" pattern="%d${LOG_DATEFORMAT_PATTERN} ${LOG_REQUEST_ID_PATTERN} %highlight${LOG_LEVEL_PATTERN}"/>
         </Console>
 
-        <Socket name="socket" host="${env:LOGSTASH_HOST_NAME:-localhost}" port="${env:LOGSTASH_HOST_PORT:-50000}" reconnectionDelayMillis="5000">
-            <JsonLayout compact="true" eventEol="true" properties="true" >
-                <KeyValuePair key="app_name" value="art-dev-backend" />
-            </JsonLayout>
-            <PatternLayout pattern="${LOGSTASH_PATTERN}" />
-        </Socket>
+<!--        <Socket name="socket" host="${env:LOGSTASH_HOST_NAME:-localhost}" port="${env:LOGSTASH_HOST_PORT:-50000}" reconnectionDelayMillis="5000">-->
+<!--            <JsonLayout compact="true" eventEol="true" properties="true" >-->
+<!--                <KeyValuePair key="app_name" value="art-dev-backend" />-->
+<!--            </JsonLayout>-->
+<!--            <PatternLayout pattern="${LOGSTASH_PATTERN}" />-->
+<!--        </Socket>-->
 
         <!-- FileAppender -->
         <RollingFile name="file_appender"