diff --git a/src/main/java/com/kusithm/hdmedi_server/domain/user/domain/AuthCode.java b/src/main/java/com/kusithm/hdmedi_server/domain/user/domain/AuthCode.java
index a62e783..11240ee 100644
--- a/src/main/java/com/kusithm/hdmedi_server/domain/user/domain/AuthCode.java
+++ b/src/main/java/com/kusithm/hdmedi_server/domain/user/domain/AuthCode.java
@@ -12,13 +12,13 @@
 @RedisHash(value = "authCode", timeToLive = 604800000)
 public class AuthCode {
     @Id
-    private String authCode;
-    private Long id;
+    private String id;
+    private Long value;
 
     public static AuthCode createAuthCode(String authCode, Long id){
         return AuthCode.builder()
-                .authCode(authCode)
-                .id(id)
+                .id(authCode)
+                .value(id)
                 .build();
     }
 }
diff --git a/src/main/java/com/kusithm/hdmedi_server/domain/user/repository/AuthCodeRepository.java b/src/main/java/com/kusithm/hdmedi_server/domain/user/repository/AuthCodeRepository.java
index 0f95d1d..001e3f7 100644
--- a/src/main/java/com/kusithm/hdmedi_server/domain/user/repository/AuthCodeRepository.java
+++ b/src/main/java/com/kusithm/hdmedi_server/domain/user/repository/AuthCodeRepository.java
@@ -5,8 +5,8 @@
 
 import java.util.Optional;
 
-public interface AuthCodeRepository extends CrudRepository<AuthCode, Long> {
-    Optional<AuthCode> findByAuthCode(String AuthCode);
+public interface AuthCodeRepository extends CrudRepository<AuthCode, String> {
+    Optional<AuthCode> findById(String id);
 
-    boolean existsByAuthCode(String authCode);
+    boolean existsById(String id);
 }
diff --git a/src/main/java/com/kusithm/hdmedi_server/domain/user/service/AuthService.java b/src/main/java/com/kusithm/hdmedi_server/domain/user/service/AuthService.java
index 0b803f8..ddb5604 100644
--- a/src/main/java/com/kusithm/hdmedi_server/domain/user/service/AuthService.java
+++ b/src/main/java/com/kusithm/hdmedi_server/domain/user/service/AuthService.java
@@ -64,12 +64,12 @@ public AuthCodeResponseDto createAuthCode(HDmediUser hDmediUser) {
         String authCode = createAuthCodeAtSecureRandom(new SecureRandom());
         AuthCode createdAuthCode = AuthCode.createAuthCode(authCode, hDmediUser.getId());
         saveAuthCode(createdAuthCode);
-        return AuthCodeResponseDto.of(createdAuthCode.getAuthCode());
+        return AuthCodeResponseDto.of(createdAuthCode.getId());
     }
 
     public GuestSignInResponseDto geustSignIn(String authCode) {
         AuthCode findAuthCode = getUserFromAuthCode(authCode);
-        User findUser = getUserFromId(findAuthCode.getId());
+        User findUser = getUserFromId(findAuthCode.getValue());
         Token issuedToken = issueAccessTokenAndRefreshToken(findUser, Boolean.TRUE);
         return GuestSignInResponseDto.of(findUser, findUser.getChildren(), issuedToken.getAccessToken());
     }
@@ -80,7 +80,8 @@ private User getUserFromId(Long userId) {
     }
 
     private AuthCode getUserFromAuthCode(String authCode) {
-        return authCodeRepository.findByAuthCode(authCode)
+        String AuthCodeId = jwtProvider.deletePrefixOfToken(authCode);
+        return authCodeRepository.findById(AuthCodeId)
                 .orElseThrow(() -> new UnauthorizedException(INVALID_AUTH_CODE));
     }
 
@@ -89,7 +90,7 @@ private void saveAuthCode(AuthCode createdAuthCode) {
     }
 
     private boolean duplicateAuthCode(String authCode) {
-        return authCodeRepository.existsByAuthCode(authCode);
+        return authCodeRepository.existsById(authCode);
     }
 
     private String createAuthCodeAtSecureRandom(SecureRandom random) {
diff --git a/src/main/java/com/kusithm/hdmedi_server/global/config/jwt/JwtProvider.java b/src/main/java/com/kusithm/hdmedi_server/global/config/jwt/JwtProvider.java
index c684546..8fe7363 100644
--- a/src/main/java/com/kusithm/hdmedi_server/global/config/jwt/JwtProvider.java
+++ b/src/main/java/com/kusithm/hdmedi_server/global/config/jwt/JwtProvider.java
@@ -10,6 +10,7 @@
 import lombok.Getter;
 import org.springframework.beans.factory.annotation.Value;
 import org.springframework.stereotype.Component;
+import org.springframework.util.StringUtils;
 
 import java.security.Key;
 import java.util.Base64;
@@ -35,6 +36,10 @@ public Token issueToken(HDmediUser hDmediUser) {
         return responseToken;
     }
 
+    public String deletePrefixOfToken(String token){
+        return StringUtils.delete(token, "Bearer ");
+    }
+
     public void validateAccessToken(String accessToken) {
         try {
             getJwtParser().parseClaimsJws(accessToken);