diff --git a/testcases/doc-test/admin_guide/oe_test_nmcli_config_dynamic_IP/oe_test_nmcli_config_dynamic_IP.sh b/testcases/doc-test/admin_guide/oe_test_nmcli_config_dynamic_IP/oe_test_nmcli_config_dynamic_IP.sh
index 4266fa4c5b06de8738b9489fd7392522f639f351..d229f54aaf6b2300cf9f182fbc52f1b2d9fc727c 100755
--- a/testcases/doc-test/admin_guide/oe_test_nmcli_config_dynamic_IP/oe_test_nmcli_config_dynamic_IP.sh
+++ b/testcases/doc-test/admin_guide/oe_test_nmcli_config_dynamic_IP/oe_test_nmcli_config_dynamic_IP.sh
@@ -16,16 +16,17 @@
 # @License   :   Mulan PSL v2
 # @Desc      :   Nmcli configure dynamic IP connection
 # ############################################
-source ${OET_PATH}/libs/locallibs/common_lib.sh
+source "${OET_PATH}"/libs/locallibs/common_lib.sh
 function config_params() {
     LOG_INFO "Start loading data!"
     con_name='test_con'
+    test_eth1=$(ls /sys/class/net/ | grep -Ewv 'lo.*|docker.*|bond.*|vlan.*|virbr.*|br.*' | grep -v $(ip route | grep "${NODE1_IPV4}" | awk '{print$3}') | sed -n 1p)
     LOG_INFO "Loading data is complete!"
 }
 
 function run_test() {
     LOG_INFO "Start executing testcase!"
-    nmcli connection add type ethernet con-name ${con_name} ifname ${NODE1_NIC} | grep successfully
+    nmcli connection add type ethernet con-name ${con_name} ifname "${test_eth1}" | grep successfully
     CHECK_RESULT $?
 
     nmcli con up ${con_name}
@@ -41,4 +42,4 @@ function post_test() {
     LOG_INFO "Finish environment cleanup."
 }
 
-main $@
+main "$@"