diff --git a/AMHScript b/AMHScript
index 29d605a..f60f151 100644
--- a/AMHScript
+++ b/AMHScript
@@ -22,17 +22,22 @@ function amh_module_install()
     else
         #Delete other version
         for module_name in `ls /root/amh/modules/ | grep 'HYProxy' | grep -v 'HYProxy-1.0'`; do
-          #amh module $module_name uninstall force;
-          #amh module $module_name delete y;
-          rm -rf /root/amh/modules/$module_name;
+            #amh module $module_name uninstall force;
+            #amh module $module_name delete y;
+            rm -rf /root/amh/modules/$module_name;
         done;
         #install PDO_MYSQL module and set InnoDB_Engine On
-        amh module download PDO_MYSQL-1.0.2;
-        amh module PDO_MYSQL-1.0.2 install force;
+        if ! ls /root/amh/modules/ | grep -q 'PDO_MYSQL-1.0.2'; then 
+            amh module download PDO_MYSQL-1.0.2;
+        fi;
+        if ! cat /etc/php.ini | grep -q 'pdo_mysql.so'; then 
+            amh module PDO_MYSQL-1.0.2 install force;
+        fi;
         amh SetParam mysql InnoDB_Engine On;
         #install nginx module
         Cpunum=`cat /proc/cpuinfo |grep 'processor'|wc -l`;
-        nginx_configure=`/usr/local/nginx/sbin/nginx -V 2> /tmp/nginx_configure && cat /tmp/nginx_configure | grep 'configure arguments' | cut -d: -f2 && rm -f /tmp/nginx_configure`;
+        nginx_configure='--prefix=/usr/local/nginx --user=www --group=www --with-http_ssl_module --with-http_gzip_static_module --without-mail_pop3_module --without-mail_imap_module --without-mail_smtp_module --without-http_uwsgi_module --without-http_scgi_module --with-ipv6';
+        [ -f /usr/local/nginx/sbin/nginx ] && nginx_configure=`/usr/local/nginx/sbin/nginx -V 2> /tmp/nginx_configure && cat /tmp/nginx_configure | grep 'configure arguments' | cut -d: -f2 && rm -f /tmp/nginx_configure`;
         new_nginx_configure=$nginx_configure;
         if ! echo "$new_nginx_configure" | grep 'with-http_stub_status_module' > /dev/null; then 
           new_nginx_configure="${new_nginx_configure} --with-http_stub_status_module";
@@ -271,7 +276,8 @@ function amh_module_uninstall()
 
         #uninstall nginx modules
         Cpunum=`cat /proc/cpuinfo |grep 'processor'|wc -l`;
-        nginx_configure=`/usr/local/nginx/sbin/nginx -V 2> /tmp/nginx_configure && cat /tmp/nginx_configure | grep 'configure arguments' | cut -d: -f2 && rm -f /tmp/nginx_configure`;
+        nginx_configure='--prefix=/usr/local/nginx --user=www --group=www --with-http_ssl_module --with-http_gzip_static_module --without-mail_pop3_module --without-mail_imap_module --without-mail_smtp_module --without-http_uwsgi_module --without-http_scgi_module --with-ipv6';
+        [ -f /usr/local/nginx/sbin/nginx ] && nginx_configure=`/usr/local/nginx/sbin/nginx -V 2> /tmp/nginx_configure && cat /tmp/nginx_configure | grep 'configure arguments' | cut -d: -f2 && rm -f /tmp/nginx_configure`;
         new_nginx_configure=$nginx_configure;
         if echo "$new_nginx_configure" | grep 'add-module=/usr/local/ngx_cache_purge-2.3' > /dev/null; then 
           new_nginx_configure=`echo $new_nginx_configure | sed "s|--add-module=/usr/local/ngx_cache_purge-2.3||"`;