diff --git a/src/main/java/org/autorepo/server/domain/user/service/CustomOAuth2UserService.java b/src/main/java/org/autorepo/server/domain/user/service/CustomOAuth2UserService.java
index d836c86..c4df744 100644
--- a/src/main/java/org/autorepo/server/domain/user/service/CustomOAuth2UserService.java
+++ b/src/main/java/org/autorepo/server/domain/user/service/CustomOAuth2UserService.java
@@ -4,6 +4,7 @@
 import org.autorepo.server.domain.user.entity.User;
 import org.autorepo.server.domain.user.entity.UserRole;
 import org.autorepo.server.domain.user.repository.UserRepository;
+import org.autorepo.server.global.utils.WebhookService;
 import org.springframework.security.oauth2.core.user.DefaultOAuth2User;
 import org.springframework.security.oauth2.core.user.OAuth2User;
 import org.springframework.security.oauth2.client.userinfo.DefaultOAuth2UserService;
@@ -15,10 +16,12 @@
 public class CustomOAuth2UserService extends DefaultOAuth2UserService {
 
     private final UserRepository userRepository;
+    private final WebhookService webhookService;
 
     @Override
     public OAuth2User loadUser(OAuth2UserRequest userRequest) {
         OAuth2User oAuth2User = super.loadUser(userRequest);
+        System.out.println("CustomOAuth2UserService - loadUser 호출됨");
 
         // GitHub의 email 필드를 가져오되, null이면 login으로 대체
         String email = oAuth2User.getAttribute("email");
@@ -29,17 +32,22 @@ public OAuth2User loadUser(OAuth2UserRequest userRequest) {
 
         // 사용자 찾기 또는 생성 및 업데이트
         User user = userRepository.findByGithubId(githubEmail).map(existingUser -> {
+            System.out.println("기존 사용자 발견: " + existingUser.getGithubId());
             // 기존 사용자일 경우 토큰 업데이트
             existingUser.setGithubToken(accessToken);
             return userRepository.save(existingUser);
         }).orElseGet(() -> {
-            // 새로운 사용자일 경우 생성
-            User newUser = User.builder()
+            // 새로운 사용자일 경우 생성중
+            System.out.println("새로운 사용자 발견: " + githubEmail);
+            User newUser = userRepository.save(User.builder()
                     .githubId(githubEmail)
                     .githubToken(accessToken)
                     .userRole(UserRole.USER)
-                    .build();
-            return userRepository.save(newUser);
+                    .build());
+            System.out.println("새로운 사용자 등록 완료");
+            webhookService.sendDiscordNotification();
+            System.out.println("웹훅 호출 완료");
+            return newUser;
         });
 
         return new DefaultOAuth2User(oAuth2User.getAuthorities(), oAuth2User.getAttributes(), "id");
diff --git a/src/main/java/org/autorepo/server/global/utils/WebhookService.java b/src/main/java/org/autorepo/server/global/utils/WebhookService.java
new file mode 100644
index 0000000..e7da7e0
--- /dev/null
+++ b/src/main/java/org/autorepo/server/global/utils/WebhookService.java
@@ -0,0 +1,52 @@
+package org.autorepo.server.global.utils;
+
+import lombok.RequiredArgsConstructor;
+import org.autorepo.server.domain.repo.repository.RepoRepository;
+import org.autorepo.server.domain.user.repository.UserRepository;
+import org.springframework.beans.factory.annotation.Value;
+import org.springframework.http.HttpEntity;
+import org.springframework.http.HttpHeaders;
+import org.springframework.http.MediaType;
+import org.springframework.stereotype.Service;
+import org.springframework.web.client.RestTemplate;
+
+import java.util.HashMap;
+import java.util.Map;
+
+@Service
+@RequiredArgsConstructor
+public class WebhookService {
+    private final UserRepository userRepository;
+    private final RepoRepository repoRepository;
+
+    @Value("${discord.webhook.url}")
+    private String discordWebhookUrl;
+
+    // 회원가입 웹훅
+    public String sendDiscordNotification() {
+        System.out.println("Discord Webhook 호출중");
+        RestTemplate restTemplate = new RestTemplate();
+        Long totalMembers = userRepository.count();
+        Long totalRepos = repoRepository.count();
+
+        String message = totalMembers + "번째 AutoRepoCat이 등장했어요!\n(현재 등록 레포 수 : " + totalRepos + "개)";
+
+        HttpHeaders headers = new HttpHeaders();
+        headers.setContentType(MediaType.APPLICATION_JSON);
+
+        Map<String, String> body = new HashMap<>();
+        body.put("content", message);
+
+        HttpEntity<Map<String, String>> requestEntity = new HttpEntity<>(body, headers);
+
+        try {
+            restTemplate.postForEntity(discordWebhookUrl, requestEntity, String.class);
+            System.out.println("Discord Webhook 호출 성공");
+        } catch (Exception e) {
+            System.err.println("Discord Webhook 호출 실패: " + e.getMessage());
+            e.printStackTrace();
+        }
+        return null;
+    }
+
+}