diff --git a/README.md b/README.md
index b6fd55c..af5e652 100644
--- a/README.md
+++ b/README.md
@@ -26,7 +26,7 @@
 - 支持[Xray-core[XTLS]](https://github.com/XTLS/Xray-core)、v2ray-core [XTLS]、v2ray-core
 - 支持不同核心之间的配置文件互相读取。
 - 支持 VLESS/VMess/trojan/trojan-go-->ws的协议
-- 支持Debian、Ubuntu、Centos，支持主流的cpu架构。**不建议用Centos、以及低版本的系统**
+- 支持Debian、Ubuntu、Centos，支持主流的cpu架构。**不建议使用Centos以及低版本的系统**
 - 支持个性化安装。
 - 不需要卸载就可以重装任何组合。卸载脚本时，是完全卸载无残留。
 - 支持纯ipv6，ipv6[注意事项](https://github.com/mack-a/v2ray-agent/blob/master/documents/ipv6_help.md)
diff --git a/install.sh b/install.sh
index eaa959a..014b4a4 100644
--- a/install.sh
+++ b/install.sh
@@ -6,7 +6,7 @@ checkSystem(){
 	if [[ ! -z `find /etc -name "redhat-release"` ]] || [[ ! -z `cat /proc/version | grep -i "centos" | grep -v grep ` ]]
 	then
 	    centosVersion=`rpm -q centos-release|awk -F "[-]" '{print $3}'|awk -F "[.]" '{print $1}'`
-	    if [[ -z "${centosVersion}" ]] && [[ `cat /etc/centos-release|grep "release 8"` ]]
+	    if [[ -z "${centosVersion}" ]] && [[ ! -z `cat /etc/centos-release|grep "release 8"` ]]
 	    then
             centosVersion=8
 	    fi
@@ -2257,14 +2257,14 @@ defaultBase64Code(){
         if [[ "${coreInstallType}" = "1" ]]
         then
             echoContent yellow " ---> 通用格式(VLESS+TCP+TLS/xtls-rprx-direct)"
-            echoContent green "    vless://${VLESSID}@${host}:${port}?security=xtls&encryption=none&host=${host}&headerType=none&type=tcp&flow=xtls-rprx-direct#${VLESSEmail}\n"
+            echoContent green "    vless://${VLESSID}@${host}:${port}?encryption=none&security=xtls&type=tcp&host=${host}&headerType=none&flow=xtls-rprx-direct#${VLESSEmail}\n"
             echoContent yellow " ---> 二维码 VLESS(VLESS+TCP+TLS/xtls-rprx-direct)"
-            echoContent green "https://api.qrserver.com/v1/create-qr-code/?size=400x400&data=vless%3a%2f%2f${VLESSID}%40${host}%3a${port}%3fsecurity%3dxtls%26encryption%3dnone%26host%3d${host}%26headerType%3dnone%26type%3dtcp%26flow%3dxtls%2drprx%2ddirect%23${VLESSEmail}\n"
+            echoContent green "https://api.qrserver.com/v1/create-qr-code/?size=400x400&data=vless%3A%2F%2F${VLESSID}%40${host}%3A${port}%3F${encryption}%3Dnone%26security%3Dxtls%26type%3Dtcp%26${host}%3D${host}%26headerType%3Dnone%26flow%3Dxtls-rprx-direct%23${VLESSEmail}\n"
 
             echoContent yellow " ---> 通用格式(VLESS+TCP+TLS/xtls-rprx-splice)"
-            echoContent green "    vless://${VLESSID}@${host}:${port}?security=xtls&encryption=none&host=${host}&headerType=none&type=tcp&flow=xtls-rprx-splice#${VLESSEmail}\n"
+            echoContent green "    vless://${VLESSID}@${host}:${port}?encryption=none&security=xtls&type=tcp&host=${host}&headerType=none&flow=xtls-rprx-splice#${VLESSEmail}\n"
             echoContent yellow " ---> 二维码 VLESS(VLESS+TCP+TLS/xtls-rprx-splice)"
-            echoContent green "https://api.qrserver.com/v1/create-qr-code/?size=400x400&data=vless%3a%2f%2f${VLESSID}%40${host}%3a${port}%3fsecurity%3dxtls%26encryption%3dnone%26host%3d${host}%26headerType%3dnone%26type%3dtcp%26flow%3dxtls%2drprx%2dsplice%23${VLESSEmail}\n"
+            echoContent green "https://api.qrserver.com/v1/create-qr-code/?size=400x400&data=vless%3A%2F%2F${VLESSID}%40${host}%3A${port}%3F${encryption}%3Dnone%26security%3Dxtls%26type%3Dtcp%26${host}%3D${host}%26headerType%3Dnone%26flow%3Dxtls-rprx-splice%23${VLESSEmail}\n"
 
         elif [[ "${coreInstallType}" = "2" || "${coreInstallType}" = "3" ]]
         then
@@ -2295,15 +2295,17 @@ defaultBase64Code(){
         echoContent green "    vmess://${qrCodeBase64Default}\n"
         echoContent yellow " ---> 二维码 vmess(VMess+TCP+TLS)"
         echoContent green "https://api.qrserver.com/v1/create-qr-code/?size=400x400&data=vmess://${qrCodeBase64Default}\n"
+
     elif [[ "${type}" = "vlessws" ]]
     then
         local VLESSID=`echo ${id}|awk -F "[\"]" '{print $2}'`
         local VLESSEmail=`echo ${ps}|awk -F "[\"]" '{print $2}'`
         echoContent yellow " ---> 通用格式(VLESS+WS+TLS)"
-        echoContent green "    vless://${VLESSID}@${host}:${port}?path=%2f${path}&security=tls&encryption=none%26host=${host}&type=ws#${VLESSEmail}\n"
+        echoContent green "    vless://${VLESSID}@${add}:${port}?encryption=none&security=tls&type=ws&host=${host}&path=%2f${path}#${VLESSEmail}\n"
 
         echoContent yellow " ---> 二维码 VLESS(VLESS+TCP+TLS/XTLS)"
-        echoContent green "https://api.qrserver.com/v1/create-qr-code/?size=400x400&data=vless%3a%2f%2f${VLESSID}%40${host}%3a${port}%3fpath%3d%2f${path}%26security%3dtls%26encryption%3dnone%26host%3d${host}%26type%3dws%23${VLESSEmail}"
+        echoContent green "https://api.qrserver.com/v1/create-qr-code/?size=400x400&data=vless%3A%2F%2F${VLESSID}%40${add}%3A${port}%3Fencryption%3Dnone%26security%3Dtls%26type%3Dws%26host%3D${host}%26path%3D%252f${path}%23${VLESSEmail}"
+
     elif [[ "${type}" = "trojan" ]]
     then
         # URLEncode
@@ -3323,7 +3325,7 @@ menu(){
     cd
     echoContent red "\n=============================================================="
     echoContent green "作者：mack-a"
-    echoContent green "当前版本：v2.2.20"
+    echoContent green "当前版本：v2.2.21"
     echoContent green "Github：https://github.com/mack-a/v2ray-agent"
     echoContent green "描述：七合一共存脚本"
     echoContent red "=============================================================="