diff --git a/init.sh b/init.sh
index 833d0b2..080578a 100755
--- a/init.sh
+++ b/init.sh
@@ -1,8 +1,8 @@
 #!/usr/bin/env bash
 set -e
 
-OS_ARCH=$(dpkg --print-architecture)
-OS_CODE=$(. /etc/os-release && echo "$VERSION_CODENAME")
+OS_ARCH=$(dpkg --print-architecture) || echo "Not Debian Based Distro" && exit 1;
+OS_CODE=$(source /etc/os-release && echo "$VERSION_CODENAME")
 OS_VERSION=""
 case $OS_CODE in
     bullseye) OS_VERSION="11" ;;
@@ -13,6 +13,35 @@ SCRIPT=$(readlink -f "$0")
 SCRIPTPATH=$(dirname "$SCRIPT")
 echo $SCRIPTPATH
 
+case $MIRROR_SOURCE in
+    1)
+        MIRROR_URL=https://mirrors.ustc.edu.cn/debian/
+        SEC_URL=https://mirrors.ustc.edu.cn/debian-security
+        DOCKER_URL=https://mirrors.ustc.edu.cn/docker-ce/linux/debian
+        ;;
+    2)
+        MIRROR_URL=https://mirrors.xjtu.edu.cn/debian/
+        SEC_URL=https://mirrors.xjtu.edu.cn/debian-security
+        DOCKER_URL=https://mirrors.xjtu.edu.cn/docker-ce/linux/debian
+        ;;
+    3)
+        MIRROR_URL=https://mirrors.nju.edu.cn/debian/
+        SEC_URL=https://mirrors.nju.edu.cn/debian-security
+        DOCKER_URL=https://mirrors.nju.edu.cn/docker-ce/linux/debian
+        ;;
+    4)
+        MIRROR_URL=https://mirrors.tuna.tsinghua.edu.cn/debian/
+        SEC_URL=https://mirrors.tuna.tsinghua.edu.cn/debian-security
+        DOCKER_URL=https://mirrors.tuna.tsinghua.edu.cn/docker-ce/linux/debian
+        ;;
+    *)
+        MIRROR_URL=https://deb.debian.org/debian/
+        SEC_URL=https://security.debian.org/debian-security
+        DOCKER_URL=https://download.docker.com/linux/debian
+        ;;
+esac
+
+
 configure(){
     sed -i -r "s/.*set tabsize.*/set tabsize 4/g" /etc/nanorc
     sed -i -r "s/.*set tabstospaces.*/set tabstospaces/g" /etc/nanorc
@@ -24,20 +53,11 @@ configure(){
     echo "    HostKeyAlgorithms ssh-ed25519,ssh-rsa,rsa-sha2-256" >> /etc/ssh/ssh_config
     echo "    PubkeyAcceptedKeyTypes ssh-ed25519,ssh-rsa,rsa-sha2-256" >> /etc/ssh/ssh_config
 
-    mirror_site=mirrors.nju.edu.cn
-    #mirror_site=mirrors.ustc.edu.cn
-    sec_site=$mirror_site
-    docker_source=https://$mirror_site/docker-ce/linux/debian
-    if [ $ORIGINAL_SOURCE -eq 1 ]; then
-        mirror_site="deb.debian.org"
-        sec_site="security.debian.org"
-        docker_source=https://download.docker.com/linux/debian
-    fi;
 
-    echo -e "deb https://$mirror_site/debian/ $OS_CODE main contrib non-free non-free-firmware
-deb https://$mirror_site/debian/ $OS_CODE-updates main contrib non-free non-free-firmware
-deb https://$mirror_site/debian/ $OS_CODE-backports main contrib non-free non-free-firmware
-deb https://$sec_site/debian-security $OS_CODE-security main contrib non-free non-free-firmware
+    echo -e "deb $MIRROR_URL $OS_CODE main contrib non-free non-free-firmware
+deb $MIRROR_URL $OS_CODE-updates main contrib non-free non-free-firmware
+deb $MIRROR_URL $OS_CODE-backports main contrib non-free non-free-firmware
+deb $SEC_URL $OS_CODE-security main contrib non-free non-free-firmware
 " | tee /etc/apt/sources.list
 
     command="nala"
@@ -55,7 +75,7 @@ deb https://$sec_site/debian-security $OS_CODE-security main contrib non-free no
         gpg --dearmor | tee /etc/apt/trusted.gpg.d/shells_zsh-users_zsh-completions.gpg > /dev/null
 
 
-    echo "deb [arch=$OS_ARCH] $docker_source $OS_CODE stable" | \
+    echo "deb [arch=$OS_ARCH] $DOCKER_URL $OS_CODE stable" | \
         tee /etc/apt/sources.list.d/docker.list
     curl -fsSL "https://download.docker.com/linux/debian/gpg" | \
         gpg --dearmor | tee /etc/apt/trusted.gpg.d/docker.gpg > /dev/null
@@ -83,16 +103,20 @@ install_pkg(){
 
 usage(){
     echo "Usage: $0 [OPTIONS]";
-    echo "Options:";
+    echo "OPTIONS:";
     echo "    -f <PACKAGES>         package list file (default: $PKG_BASE)";
     echo "    -i                    install only";
-    echo "    -o                    original apt source";
+    echo "    -m <CHOICE>           apt mirror source";
+    echo "            1             ustc (default)"
+    echo "            2             xjtu"
+    echo "            3             nju"
+    echo "            4             tsinghua"
 }
 
 PKG_BASE="$SCRIPTPATH/packages-base"
 INSTALL_ONLY=0;
-ORIGINAL_SOURCE=0;
-while getopts ":f:io" OPT; do
+MIRROR_SOURCE=1;
+while getopts ":f:im:" OPT; do
     case $OPT in
     f)
             PKG_BASE=$OPTARG;
@@ -100,8 +124,8 @@ while getopts ":f:io" OPT; do
     i)
             INSTALL_ONLY=1;
             ;;
-    o)
-            ORIGINAL_SOURCE=1;
+    m)
+            MIRROR_SOURCE=$OPTARG;
             ;;
     ?)
             echo "Invalid Option: -$OPTARG";