diff --git a/deploy/mssql.sh b/deploy/mssql.sh
new file mode 100644
index 00000000..28ddb83a
--- /dev/null
+++ b/deploy/mssql.sh
@@ -0,0 +1,111 @@
+#!/bin/bash
+
+#Here is a script to deploy cert to mssql server.
+
+#returns 0 means success, otherwise error.
+
+#DEPLOY_mssql_CONF="/var/opt/mssql/mssql.conf"
+#DEPLOY_mssql_RELOAD="systemctl restart mssql-server.service"
+
+########  Public functions #####################
+
+#domain keyfile certfile cafile fullchain
+mssql_deploy() {
+  _cdomain="$1"
+  _ckey="$2"
+  _ccert="$3"
+  _cca="$4"
+  _cfullchain="$5"
+
+  _debug _cdomain "$_cdomain"
+  _debug _ckey "$_ckey"
+  _debug _ccert "$_ccert"
+  _debug _cca "$_cca"
+  _debug _cfullchain "$_cfullchain"
+
+  _ssl_path="/etc/acme.sh/mssql"
+  if ! mkdir -p "$_ssl_path"; then
+    _err "Can not create folder:$_ssl_path"
+    return 1
+  fi
+
+  mkdir -p "$DOMAIN_BACKUP_PATH"
+
+  _info "Copying key and cert"
+  _real_key="$_ssl_path/mssql.key"
+  if ! cat "$_ckey" >"$_real_key"; then
+    _err "Error: write key file to: $_real_key"
+    return 1
+  fi
+  _real_fullchain="$_ssl_path/mssql.chain.pem"
+  if ! cat "$_cfullchain" >"$_real_fullchain"; then
+    _err "Error: write key file to: $_real_fullchain"
+    return 1
+  fi
+
+  DEFAULT_mssql_RELOAD="systemctl restart mssql-server.service"
+  _reload="${DEPLOY_mssql_RELOAD:-$DEFAULT_mssql_RELOAD}"
+
+  if [ -z "$IS_RENEW" ]; then
+    DEFAULT_mssql_CONF="/var/opt/mssql/mssql.conf"
+    _mssql_conf="${DEPLOY_mssql_CONF:-$DEFAULT_mssql_CONF}"
+    if [ ! -f "$_mssql_conf" ]; then
+      if [ -z "$DEPLOY_mssql_CONF" ]; then
+        _err "mssql conf is not found, please define DEPLOY_mssql_CONF"
+        return 1
+      else
+        _err "It seems that the specified mssql conf is not valid, please check."
+        return 1
+      fi
+    fi
+    if [ ! -w "$_mssql_conf" ]; then
+      _err "The file $_mssql_conf is not writable, please change the permission."
+      return 1
+    fi
+    _backup_conf="$DOMAIN_BACKUP_PATH/mssql.conf.bak"
+    _info "Backup $_mssql_conf to $_backup_conf"
+    cp "$_mssql_conf" "$_backup_conf"
+
+    _info "Modify mssql conf: $_mssql_conf"
+    if  /opt/mssql/bin/mssql-conf  set network.tlscert "$_real_fullchain" &&
+      /opt/mssql/bin/mssql-conf  set network.tlskey "$_real_key"; then
+      _info "Set config success!"
+    else
+      _err "Config mssql server error, please report bug to us."
+      _info "Restoring mssql conf"
+      if cat "$_backup_conf" >"$_mssql_conf"; then
+        _info "Restore conf success"
+        eval "$_reload"
+      else
+        _err "Oops, error restore mssql conf, please report bug to us."
+      fi
+      return 1
+    fi
+  fi
+
+  _info "Run reload: $_reload"
+  if eval "$_reload"; then
+    _info "Reload success!"
+    if [ "$DEPLOY_mssql_CONF" ]; then
+      _savedomainconf DEPLOY_mssql_CONF "$DEPLOY_mssql_CONF"
+    else
+      _cleardomainconf DEPLOY_mssql_CONF
+    fi
+    if [ "$DEPLOY_mssql_RELOAD" ]; then
+      _savedomainconf DEPLOY_mssql_RELOAD "$DEPLOY_mssql_RELOAD"
+    else
+      _cleardomainconf DEPLOY_mssql_RELOAD
+    fi
+    return 0
+  else
+    _err "Reload error, restoring"
+    if cat "$_backup_conf" >"$_mssql_conf"; then
+      _info "Restore conf success"
+      eval "$_reload"
+    else
+      _err "Oops, error restore mssql conf, please report bug to us."
+    fi
+    return 1
+  fi
+  return 0
+}