diff --git a/xiuosiot-frontend/src/assets/images/plc_monitor_bg.png b/xiuosiot-frontend/src/assets/images/plc_monitor_bg.png
index 060aeb8..e75b037 100644
Binary files a/xiuosiot-frontend/src/assets/images/plc_monitor_bg.png and b/xiuosiot-frontend/src/assets/images/plc_monitor_bg.png differ