diff --git a/src/main/java/com/bbteam/budgetbuddies/domain/user/dto/UserDto.java b/src/main/java/com/bbteam/budgetbuddies/domain/user/dto/UserDto.java
index 449178b2..55312f17 100644
--- a/src/main/java/com/bbteam/budgetbuddies/domain/user/dto/UserDto.java
+++ b/src/main/java/com/bbteam/budgetbuddies/domain/user/dto/UserDto.java
@@ -46,4 +46,10 @@ public static class ModifyUserDto {
         private String email;
         private String name;
     }
+
+    @Getter
+    @Builder
+    public static class AuthUserDto {
+        private Long id;
+    }
 }
diff --git a/src/main/java/com/bbteam/budgetbuddies/global/config/WebConfig.java b/src/main/java/com/bbteam/budgetbuddies/global/config/WebConfig.java
new file mode 100644
index 00000000..712fb35a
--- /dev/null
+++ b/src/main/java/com/bbteam/budgetbuddies/global/config/WebConfig.java
@@ -0,0 +1,21 @@
+package com.bbteam.budgetbuddies.global.config;
+
+import com.bbteam.budgetbuddies.global.security.utils.AuthArgumentResolver;
+import lombok.RequiredArgsConstructor;
+import org.springframework.context.annotation.Configuration;
+import org.springframework.web.method.support.HandlerMethodArgumentResolver;
+import org.springframework.web.servlet.config.annotation.WebMvcConfigurer;
+
+import java.util.List;
+
+@Configuration
+@RequiredArgsConstructor
+public class WebConfig implements WebMvcConfigurer {
+
+    private final AuthArgumentResolver authArgumentResolver;
+
+    @Override
+    public void addArgumentResolvers(List<HandlerMethodArgumentResolver> argumentResolvers) {
+        argumentResolvers.add(authArgumentResolver);
+    }
+}
\ No newline at end of file
diff --git a/src/main/java/com/bbteam/budgetbuddies/global/security/otp/OtpService.java b/src/main/java/com/bbteam/budgetbuddies/global/security/otp/OtpService.java
index ff76eb7f..40c2eac3 100644
--- a/src/main/java/com/bbteam/budgetbuddies/global/security/otp/OtpService.java
+++ b/src/main/java/com/bbteam/budgetbuddies/global/security/otp/OtpService.java
@@ -66,7 +66,7 @@ public OtpNumber generateOtp(String phoneNumber) {
         otpCache.put(phoneNumber, otp);
 
         // 실제 메시지 전송
-         sendMessage(phoneNumber, otp);
+        sendMessage(phoneNumber, otp);
 
         return otp;
     }
@@ -85,7 +85,7 @@ public void sendMessage(String phoneNumber, OtpNumber otp) {
         message.setTo(phoneNumber); // 수신 번호 설정
 
         // 메시지 내용 설정 (한글 45자 이하일 경우 자동으로 SMS로 전송)
-        message.setText("[빈주머니즈]\n인증번호: " + otp.getOtp());
+        message.setText("[빈주머니즈]\n인증번호: " + otp.getOtp() + "\n보안을 위해 번호를 타인과 공유하지 마세요.");
 
         // 메시지 전송 요청 및 응답 로그 출력
         SingleMessageSentResponse response = this.messageService.sendOne(new SingleMessageSendingRequest(message));
diff --git a/src/main/java/com/bbteam/budgetbuddies/global/security/utils/AuthArgumentResolver.java b/src/main/java/com/bbteam/budgetbuddies/global/security/utils/AuthArgumentResolver.java
new file mode 100644
index 00000000..7560b0f2
--- /dev/null
+++ b/src/main/java/com/bbteam/budgetbuddies/global/security/utils/AuthArgumentResolver.java
@@ -0,0 +1,47 @@
+package com.bbteam.budgetbuddies.global.security.utils;
+
+import com.bbteam.budgetbuddies.apiPayload.code.status.ErrorStatus;
+import com.bbteam.budgetbuddies.apiPayload.exception.GeneralException;
+import com.bbteam.budgetbuddies.domain.user.dto.UserDto;
+import com.bbteam.budgetbuddies.domain.user.entity.User;
+import lombok.NonNull;
+import lombok.RequiredArgsConstructor;
+import org.springframework.core.MethodParameter;
+import org.springframework.security.core.Authentication;
+import org.springframework.security.core.context.SecurityContextHolder;
+import org.springframework.stereotype.Component;
+import org.springframework.web.bind.support.WebDataBinderFactory;
+import org.springframework.web.context.request.NativeWebRequest;
+import org.springframework.web.method.support.HandlerMethodArgumentResolver;
+import org.springframework.web.method.support.ModelAndViewContainer;
+
+@Component
+@RequiredArgsConstructor
+public class AuthArgumentResolver implements HandlerMethodArgumentResolver {
+
+    // @Auth 존재 여부 확인
+    @Override
+    public boolean supportsParameter(MethodParameter parameter) {
+        return parameter.hasParameterAnnotation(AuthUser.class);
+    }
+
+    // @Auth 존재 시, 사용자 정보 확인하여 반환
+    @Override
+    public Object resolveArgument(@NonNull MethodParameter parameter, ModelAndViewContainer mavContainer, @NonNull NativeWebRequest webRequest, WebDataBinderFactory binderFactory) throws Exception {
+        Authentication authentication = SecurityContextHolder.getContext().getAuthentication();
+        if (authentication == null) {
+            throw new GeneralException(ErrorStatus._USER_NOT_FOUND);
+        }
+
+        Object principal = authentication.getPrincipal();
+        if (!(principal instanceof User user)) {
+            throw new GeneralException(ErrorStatus._USER_NOT_FOUND);
+        }
+
+        UserDto.AuthUserDto authUserDto = UserDto.AuthUserDto.builder()
+            .id(user.getId())
+            .build();
+
+        return authUserDto;
+    }
+}
\ No newline at end of file
diff --git a/src/main/java/com/bbteam/budgetbuddies/global/security/utils/AuthUser.java b/src/main/java/com/bbteam/budgetbuddies/global/security/utils/AuthUser.java
new file mode 100644
index 00000000..9fa4a0e1
--- /dev/null
+++ b/src/main/java/com/bbteam/budgetbuddies/global/security/utils/AuthUser.java
@@ -0,0 +1,12 @@
+package com.bbteam.budgetbuddies.global.security.utils;
+
+import java.lang.annotation.ElementType;
+import java.lang.annotation.Retention;
+import java.lang.annotation.RetentionPolicy;
+import java.lang.annotation.Target;
+
+
+@Target(ElementType.PARAMETER)
+@Retention(RetentionPolicy.RUNTIME)
+public @interface AuthUser {
+}