diff --git a/device/ruijie/x86_64-ruijie_b6510-48vs8cq-r0/monitor.py b/device/ruijie/x86_64-ruijie_b6510-48vs8cq-r0/monitor.py
index f9cbb31be4..103a2f30ac 100755
--- a/device/ruijie/x86_64-ruijie_b6510-48vs8cq-r0/monitor.py
+++ b/device/ruijie/x86_64-ruijie_b6510-48vs8cq-r0/monitor.py
@@ -6,8 +6,8 @@
 * PSU
 """
 import os
-import xml.etree.ElementTree as ET
 import glob
+from lxml import etree as ET
 
 MAILBOX_DIR = "/sys/bus/i2c/devices/"
 PORTS_DIR = "/sys/class/net/"