diff --git a/backend/src/main/java/com/techeer/backend/api/user/controller/UserController.java b/backend/src/main/java/com/techeer/backend/api/user/controller/UserController.java
index c6b8a7b4..c88dbd78 100644
--- a/backend/src/main/java/com/techeer/backend/api/user/controller/UserController.java
+++ b/backend/src/main/java/com/techeer/backend/api/user/controller/UserController.java
@@ -69,4 +69,11 @@ public CommonResponse<Void> reGenerateAccessToken(@CookieValue(value = "refreshT
         return CommonResponse.of(SuccessCode.TOKEN_REISSUE_OK, null);
     }
 
+
+    @Operation(summary = "모의 유저 데이터 생성")
+    @PostMapping("/mock/signup")
+    public CommonResponse<String> mockSignup(@RequestParam(name = "id") String id) {
+        String accessToken = userService.mockSignup(id);
+        return CommonResponse.of(SuccessCode.OK, accessToken);
+    }
 }
diff --git a/backend/src/main/java/com/techeer/backend/api/user/service/UserService.java b/backend/src/main/java/com/techeer/backend/api/user/service/UserService.java
index ad88f439..0b7e8742 100644
--- a/backend/src/main/java/com/techeer/backend/api/user/service/UserService.java
+++ b/backend/src/main/java/com/techeer/backend/api/user/service/UserService.java
@@ -60,7 +60,6 @@ public User getLoginUser() {
         return userRepository.findByEmail(userDetails.getUsername())
                 .orElseThrow(() -> new BusinessException(ErrorCode.USER_NOT_FOUND));
     }
-
     @Transactional
     public JwtToken reissueAccessToken(String refreshToken) {
 
@@ -68,11 +67,26 @@ public JwtToken reissueAccessToken(String refreshToken) {
         if (!jwtService.isRefreshTokenValid(refreshToken)) {
             return null;
         }
-
         User user = this.getLoginUser();
         return JwtToken.builder()
                 .accessToken(jwtService.createAccessToken(user.getEmail()))
                 .refreshToken(refreshToken)
                 .build();
     }
+
+    public String mockSignup(String id) {
+        String accessToken = jwtService.createAccessToken(id);
+        String refreshToken = jwtService.createRefreshToken();
+
+        User user = User.builder()
+                .refreshToken(refreshToken)
+                .email(id)
+                .username("mock")
+                .role(Role.REGULAR)
+                .socialType(SocialType.GOOGLE)
+                .build();
+        userRepository.save(user);
+
+        return accessToken;
+    }
 }
diff --git a/backend/src/main/java/com/techeer/backend/global/jwt/service/JwtService.java b/backend/src/main/java/com/techeer/backend/global/jwt/service/JwtService.java
index c7a57ddb..f313d457 100644
--- a/backend/src/main/java/com/techeer/backend/global/jwt/service/JwtService.java
+++ b/backend/src/main/java/com/techeer/backend/global/jwt/service/JwtService.java
@@ -13,6 +13,7 @@
 import jakarta.servlet.http.HttpServletRequest;
 import jakarta.servlet.http.HttpServletResponse;
 import java.security.Key;
+import java.time.Duration;
 import java.util.Date;
 import java.util.Optional;
 import lombok.Getter;
@@ -20,6 +21,7 @@
 import lombok.extern.slf4j.Slf4j;
 import org.springframework.beans.factory.annotation.Value;
 import org.springframework.data.redis.core.RedisTemplate;
+import org.springframework.security.oauth2.jwt.JwtException;
 import org.springframework.stereotype.Service;
 
 @Service
@@ -50,6 +52,7 @@ public class JwtService {
 
     private final UserRepository userRepository;
     private final RedisTemplate<String, String> redisTemplate;
+    private final RedisService redisService;
 
     private Key key;
 
diff --git a/backend/src/main/java/com/techeer/backend/global/oauth/service/CustomOAuth2UserService.java b/backend/src/main/java/com/techeer/backend/global/oauth/service/CustomOAuth2UserService.java
index 44052814..c06814ef 100644
--- a/backend/src/main/java/com/techeer/backend/global/oauth/service/CustomOAuth2UserService.java
+++ b/backend/src/main/java/com/techeer/backend/global/oauth/service/CustomOAuth2UserService.java
@@ -5,6 +5,7 @@
 import com.techeer.backend.api.user.service.UserService;
 import com.techeer.backend.global.error.ErrorCode;
 import com.techeer.backend.global.error.exception.BusinessException;
+import com.techeer.backend.global.oauth.EmailFetcher.GitHubEmailFetcher;
 import com.techeer.backend.global.oauth.OAuthAttributes;
 import com.techeer.backend.global.oauth.oauth2user.CustomOAuth2User;
 import java.util.Collections;