diff --git a/source/tools/detect/virt/qemuflamegraph/qemuflamegraph.sh b/source/tools/detect/virt/qemuflamegraph/qemuflamegraph.sh
index be8038870a07755a91e98690fc26d1ca341d1c89..39894f2246d6360bf805fea6bd0431ed56802189 100644
--- a/source/tools/detect/virt/qemuflamegraph/qemuflamegraph.sh
+++ b/source/tools/detect/virt/qemuflamegraph/qemuflamegraph.sh
@@ -31,6 +31,12 @@ monitor() {
 		yum install -y perf
 	fi
 
+	sudo ps aux  |grep qemu |grep $domain >/dev/null 2>&1
+        if [ $? -ne 0 ]; then
+                sudo echo "vm can not find: $domain"
+                exit -1
+        fi  
+
 	pid=`sudo ps aux  |grep qemu |grep $domain | awk '{print $2}'`
 	if [[ -z "$pid" ]]; then
                 sudo echo "vm can not find: $domain pid"