diff --git a/src/main/java/agridata/spring/controller/NotificationController.java b/src/main/java/agridata/spring/controller/NotificationController.java
index 966d277..062ad2d 100644
--- a/src/main/java/agridata/spring/controller/NotificationController.java
+++ b/src/main/java/agridata/spring/controller/NotificationController.java
@@ -11,9 +11,9 @@
 import agridata.spring.service.impl.NotificationServiceImpl;
 import lombok.RequiredArgsConstructor;
 import lombok.extern.slf4j.Slf4j;
-import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.web.bind.annotation.*;
 
+import java.time.LocalDateTime;
 import java.util.List;
 
 @Slf4j
@@ -44,8 +44,21 @@ public ApiResponse<NotificationRequestDTO.CreateRequest> createNotification(@Req
     @GetMapping
     public ApiResponse<List<NotificationLogDTO>> getUserNotifications() {
         Long userId = securityUtil.getCurrentMemberId();
+
+        // 17시 기준으로 오늘 또는 어제 알림 범위 설정
+        LocalDateTime now = LocalDateTime.now();
+        LocalDateTime start, end;
+
+        if (now.getHour() >= 17) {
+            start = now.withHour(17).withMinute(0).withSecond(0).withNano(0);
+            end = start.plusDays(1).withHour(16).withMinute(59).withSecond(59);
+        } else {
+            start = now.minusDays(1).withHour(17).withMinute(0).withSecond(0).withNano(0);
+            end = now.withHour(16).withMinute(59).withSecond(59);
+        }
+
         List<NotificationLog> logs = notificationLogRepository
-                .findByNotification_User_UserIdOrderByTriggeredAtDesc(userId);
+                .findByNotification_User_UserIdAndTriggeredAtBetweenOrderByTriggeredAtDesc(userId, start, end);
 
         List<NotificationLogDTO> result = logs.stream()
                 .map(log -> NotificationLogDTO.from(log, locationCodeLoader))  // 💡 지역명 포함 변환
diff --git a/src/main/java/agridata/spring/repository/NotificationLogRepository.java b/src/main/java/agridata/spring/repository/NotificationLogRepository.java
index c78aa4f..506c7ee 100644
--- a/src/main/java/agridata/spring/repository/NotificationLogRepository.java
+++ b/src/main/java/agridata/spring/repository/NotificationLogRepository.java
@@ -4,9 +4,16 @@
 import org.springframework.data.jpa.repository.JpaRepository;
 import org.springframework.stereotype.Repository;
 
+import java.time.LocalDateTime;
 import java.util.List;
 
 @Repository
 public interface NotificationLogRepository extends JpaRepository<NotificationLog, Long> {
-    List<NotificationLog> findByNotification_User_UserIdOrderByTriggeredAtDesc(Long userId);
+//    List<NotificationLog> findByNotification_User_UserIdOrderByTriggeredAtDesc(Long userId);
+    // 기존 함수에 시작 시간, 마감 시간 추가
+    List<NotificationLog> findByNotification_User_UserIdAndTriggeredAtBetweenOrderByTriggeredAtDesc(
+            Long userId, LocalDateTime start, LocalDateTime end);
+
+    // NotificationLogRepository.java
+    boolean existsByTriggeredAtBetween(LocalDateTime start, LocalDateTime end);
 }
\ No newline at end of file
diff --git a/src/main/java/agridata/spring/service/NotificationScheduler.java b/src/main/java/agridata/spring/service/NotificationScheduler.java
index cb436be..bc6aed9 100644
--- a/src/main/java/agridata/spring/service/NotificationScheduler.java
+++ b/src/main/java/agridata/spring/service/NotificationScheduler.java
@@ -10,8 +10,15 @@
 public class NotificationScheduler {
 
     private final NotificationServiceImpl notificationServiceImpl;
-    // 주기적으로 실행할 작업을 정의할 때 사용
-    @Scheduled(cron = "0 0 0 * * *") // 매 시간 정각마다
+    // @scheduled: 주기적으로 실행할 작업을 정의할 때 사용
+//    @Scheduled(cron = "0 0 0 * * *") // 매 시간 정각마다
+
+//    @Scheduled(cron = "0 */1 * * * *") // 매 1분마다 실행
+
+    @Scheduled(cron = "0 */5 17 * * *") // 매일 17:00 ~ 17:55 사이 5분 간격 실행
+
+
+
 
     public void runNotificationJob() {
         notificationServiceImpl.checkAndLogPriceAlerts();
diff --git a/src/main/java/agridata/spring/service/impl/NotificationServiceImpl.java b/src/main/java/agridata/spring/service/impl/NotificationServiceImpl.java
index 5d6bde2..0a27f73 100644
--- a/src/main/java/agridata/spring/service/impl/NotificationServiceImpl.java
+++ b/src/main/java/agridata/spring/service/impl/NotificationServiceImpl.java
@@ -39,6 +39,21 @@ public class NotificationServiceImpl {
 
     @Transactional
     public void checkAndLogPriceAlerts() {
+
+        // 1. 중복 방지: 이미 오늘 17:00~내일 16:59 사이에 저장된 알림이 있는지 확인
+        LocalDateTime now = LocalDateTime.now();
+        LocalDateTime start = now.getHour() >= 17
+                ? now.withHour(17).withMinute(0).withSecond(0).withNano(0)
+                : now.minusDays(1).withHour(17).withMinute(0).withSecond(0).withNano(0);
+        LocalDateTime end = start.plusDays(1).withHour(16).withMinute(59).withSecond(59).withNano(999999999);
+
+        boolean alreadyLogged = notificationLogRepository.existsByTriggeredAtBetween(start, end);
+        if (alreadyLogged) {
+            log.info("🛑 이미 알림이 생성된 기간입니다. ({} ~ {})", start, end);
+            return;
+        }
+
+
         List<Notification> notifications = notificationRepository.findAllByIsActiveTrue();
         log.info("🔔 알림 확인 시작: 총 {}건", notifications.size());
 
@@ -164,5 +179,7 @@ private int parsePrice(String xml) {
 
     private String getToday() {
         return LocalDate.now().format(DateTimeFormatter.ofPattern("yyyyMMdd"));
+        // 테스트용 "20250627"
+
     }
 }