diff --git a/sb.sh b/sb.sh
index 167e77d..035ccc1 100644
--- a/sb.sh
+++ b/sb.sh
@@ -13,6 +13,7 @@ blue(){ echo -e "\033[36m\033[01m$1\033[0m";}
 white(){ echo -e "\033[37m\033[01m$1\033[0m";}
 readp(){ read -p "$(yellow "$1")" $2;}
 [[ $EUID -ne 0 ]] && yellow "请以root模式运行脚本" && exit
+stty erase $'\b' 2>/dev/null || stty erase '^H' 2>/dev/null
 #[[ -e /etc/hosts ]] && grep -qE '^ *172.65.251.78 gitlab.com' /etc/hosts || echo -e '\n172.65.251.78 gitlab.com' >> /etc/hosts
 if [[ -f /etc/redhat-release ]]; then
 release="Centos"