diff --git a/main.py b/main.py
index 9b0e42d..2d274d7 100644
--- a/main.py
+++ b/main.py
@@ -31,7 +31,7 @@ try:
         font15 = ImageFont.truetype('wqy-microhei.ttc', 20)
         draw.text((3, 3), '{}'.format(message), font = font15, fill = 0)
         epd.display(epd.getbuffer(image))
-        time.sleep(2)
+        time.sleep(20)
     
     # # read bmp file 
     # print("read bmp file")