diff --git a/lets-encrypt/letsencrypt.sh b/lets-encrypt/letsencrypt.sh
new file mode 100644
index 0000000..16a21b9
--- /dev/null
+++ b/lets-encrypt/letsencrypt.sh
@@ -0,0 +1,56 @@
+#!/bin/bash
+
+CONFIG=$1
+ACME_TINY="/tmp/acme_tiny.py"
+
+if [ -f "$CONFIG" ];then
+    . $CONFIG
+    cd $(dirname $CONFIG)
+else
+    echo "ERROR CONFIG."
+    exit 1
+fi
+
+KEY_PREFIX="${DOMAIN_KEY%%.*}"
+DOMAIN_CRT="$KEY_PREFIX.crt"
+DOMAIN_CSR="$KEY_PREFIX.csr"
+DOMAIN_CHAINED_CRT="$KEY_PREFIX.chained.crt"
+
+if [ ! -f "$ACCOUNT_KEY" ];then
+    echo "Generate account key..."
+    openssl genrsa 4096 > $ACCOUNT_KEY
+fi
+
+if [ ! -f "$DOMAIN_KEY" ];then
+    echo "Generate domain key..."
+    openssl genrsa 2048 > $DOMAIN_KEY
+fi
+
+echo "Generate CSR...$DOAMIN_CSR"
+openssl req -new -sha256 -key $DOMAIN_KEY -subj "/" -reqexts SAN -config <(cat /etc/ssl/openssl.cnf <(printf "[SAN]\nsubjectAltName=$DOMAINS")) > $DOMAIN_CSR
+
+wget https://raw.githubusercontent.com/diafygi/acme-tiny/master/acme_tiny.py -O $ACME_TINY -o /dev/null
+
+if [ -f "$DOMAIN_CRT" ];then
+    mv $DOMAIN_CRT $DOMAIN_CRT-OLD-$(date +%y%m%d-%H%M%S)
+fi
+
+DOMAIN_DIR="$DOMAIN_DIR/.well-known/acme-challenge/"
+mkdir -p $DOMAIN_DIR
+
+python $ACME_TINY --account-key $ACCOUNT_KEY --csr $DOMAIN_CSR --acme-dir $DOMAIN_DIR > $DOMAIN_CRT
+
+if [ "$?" != 0 ];then
+    exit 1
+fi
+
+if [ ! -f "lets-encrypt-x1-cross-signed.pem" ];then
+    wget https://letsencrypt.org/certs/lets-encrypt-x1-cross-signed.pem -o /dev/null
+fi
+
+cat $DOMAIN_CRT lets-encrypt-x1-cross-signed.pem > $DOMAIN_CHAINED_CRT
+
+
+echo -e "\e[01;32New cert: $DOMAIN_CHAINED_CRT has been generated$DOMAIN_CHAINED_CRT has been generated\e[0m"
+
+service nginx reload