diff --git a/scripts/install_centos.sh b/scripts/install_centos.sh
index cbe4d51ed..5891a1632 100755
--- a/scripts/install_centos.sh
+++ b/scripts/install_centos.sh
@@ -98,10 +98,12 @@ yum -y install python36-devel
 cd /www/server/mdserver-web/scripts && ./lib.sh
 
 chmod 755 /www/server/mdserver-web/data
-#venv
-cd /www/server/mdserver-web && python3 -m venv .
-cd /www/server/mdserver-web && source /www/server/mdserver-web/bin/activate && pip3 install -r /www/server/mdserver-web/requirements.txt
 
+if [ -f /www/server/mdserver-web/bin/activate ];then
+    cd /www/server/mdserver-web && source /www/server/mdserver-web/bin/activate && pip3 install -r /www/server/mdserver-web/requirements.txt
+else
+    cd /www/server/mdserver-web && pip3 install -r /www/server/mdserver-web/requirements.txt
+fi
 cd /www/server/mdserver-web && ./cli.sh start
 sleep 5
 
diff --git a/scripts/install_macos.sh b/scripts/install_macos.sh
index 9883150ea..8270baae2 100755
--- a/scripts/install_macos.sh
+++ b/scripts/install_macos.sh
@@ -38,9 +38,12 @@ fi
 
 
 chmod 755 $DEV/server/mdserver-web/data
+if [ -f $DEV/server/mdserver-web/bin/activate ];then
+    cd $DEV/server/mdserver-web && python3 -m venv $DEV/server/mdserver-web && source $DEV/server/mdserver-web/bin/activate && pip3 install -r $DEV/server/mdserver-web/requirements.txt
+else
+	cd $DEV/server/mdserver-web && pip3 install -r $DEV/server/mdserver-web/requirements.txt
+fi
 
-cd $DEV/server/mdserver-web && python3 -m venv $DEV/server/mdserver-web \
-source $DEV/server/mdserver-web/bin/activate && pip install -r $DEV/server/mdserver-web/requirements.txt
 
 cd $DEV/server/mdserver-web && ./cli.sh start
 cd $DEV/server/mdserver-web && ./cli.sh stop
diff --git a/scripts/update_centos.sh b/scripts/update_centos.sh
index 283958c46..a511186a7 100755
--- a/scripts/update_centos.sh
+++ b/scripts/update_centos.sh
@@ -25,7 +25,12 @@ chmod 755 /www/server/mdserver-web/data
 
 #venv
 cd /www/server/mdserver-web && python3 -m venv .
-cd /www/server/mdserver-web && source /www/server/mdserver-web/bin/activate && pip3 install -r /www/server/mdserver-web/requirements.txt
+
+if [ -f /www/server/mdserver-web/bin/activate ];then
+    cd /www/server/mdserver-web && source /www/server/mdserver-web/bin/activate && pip3 install -r /www/server/mdserver-web/requirements.txt
+else
+    cd /www/server/mdserver-web && pip3 install -r /www/server/mdserver-web/requirements.txt
+fi
 
 sh /etc/init.d/mw stop && rm -rf  /www/server/mdserver-web/scripts/init.d/mw && rm -rf  /etc/init.d/mw