diff --git a/tests/parallel_test/cases.task b/tests/parallel_test/cases.task
index e7e273bc9f..cecaaef1d0 100644
--- a/tests/parallel_test/cases.task
+++ b/tests/parallel_test/cases.task
@@ -687,9 +687,9 @@
 ,,y,system-test,./pytest.sh python3 ./test.py -f 7-tmq/tmqError.py
 ,,y,system-test,./pytest.sh python3 ./test.py -f 7-tmq/schema.py
 ,,y,system-test,./pytest.sh python3 ./test.py -f 7-tmq/stbFilter.py
-,,,system-test,python3 ./test.py -f 7-tmq/tmqCheckData.py
-,,,system-test,python3 ./test.py -f 7-tmq/tmqCheckData1.py
-,,,system-test,python3 ./test.py -f 7-tmq/tmqConsumerGroup.py
+,,y,system-test,./pytest.sh python3 ./test.py -f 7-tmq/tmqCheckData.py
+,,y,system-test,./pytest.sh python3 ./test.py -f 7-tmq/tmqCheckData1.py
+,,y,system-test,./pytest.sh python3 ./test.py -f 7-tmq/tmqConsumerGroup.py
 ,,,system-test,python3 ./test.py -f 7-tmq/tmqShow.py
 ,,,system-test,python3 ./test.py -f 7-tmq/tmqAlterSchema.py
 ,,,system-test,python3 ./test.py -f 7-tmq/tmqConsFromTsdb.py
diff --git a/tests/system-test/7-tmq/tmqCommon.py b/tests/system-test/7-tmq/tmqCommon.py
index c153e94caa..141d013270 100644
--- a/tests/system-test/7-tmq/tmqCommon.py
+++ b/tests/system-test/7-tmq/tmqCommon.py
@@ -128,12 +128,12 @@ class TMQCom:
         os.system(shellCmd)
 
     def stopTmqSimProcess(self, processorName):
-        psCmd = "ps -ef|grep -w %s|grep -v grep | awk '{print $2}'"%(processorName)
+        psCmd = "unset LD_PRELOAD; ps -ef|grep -w %s|grep -v grep | awk '{print $2}'"%(processorName)
         processID = subprocess.check_output(psCmd, shell=True).decode("utf-8")
         onlyKillOnceWindows = 0
         while(processID):
             if not platform.system().lower() == 'windows' or (onlyKillOnceWindows == 0 and platform.system().lower() == 'windows'):
-                killCmd = "kill -INT %s > /dev/null 2>&1" % processID
+                killCmd = "unset LD_PRELOAD; kill -INT %s > /dev/null 2>&1" % processID
                 os.system(killCmd)
                 onlyKillOnceWindows = 1
             time.sleep(0.2)