diff --git a/backend/gui/pos_sales_gui.py b/backend/gui/pos_sales_gui.py
index 4caa148..3f946c2 100644
--- a/backend/gui/pos_sales_gui.py
+++ b/backend/gui/pos_sales_gui.py
@@ -626,10 +626,10 @@ class POSSalesGUI(QMainWindow):
         # 초기 조회 실행
         self.refresh_sales()
 
-        # 자동 새로고침 타이머 (30초마다)
+        # 자동 새로고침 타이머 (5초마다)
         self.refresh_timer = QTimer()
         self.refresh_timer.timeout.connect(self.refresh_sales)
-        self.refresh_timer.start(30000)  # 30초 = 30000ms
+        self.refresh_timer.start(5000)  # 5초 = 5000ms
 
     def on_date_changed(self, date):
         """날짜 변경 시 유효성 검사"""