diff --git a/install.sh b/install.sh
index 8dabd7c..af2bcde 100644
--- a/install.sh
+++ b/install.sh
@@ -1464,6 +1464,13 @@ deploy_acme_letsencrypt() {
     # 申请证书
     echo ""
     print_info "正在申请 Let's Encrypt 证书..."
+
+    # 再次确认acme.sh存在
+    if [[ ! -f ~/.acme.sh/acme.sh ]]; then
+        print_error "acme.sh文件不存在: ~/.acme.sh/acme.sh"
+        return 1
+    fi
+
     if ~/.acme.sh/acme.sh --issue -d "$DOMAIN" --nginx; then
         print_success "证书申请成功"
     else
@@ -1480,6 +1487,13 @@ deploy_acme_letsencrypt() {
     # 安装证书
     echo ""
     print_info "正在安装证书到Nginx..."
+
+    # 再次确认acme.sh存在
+    if [[ ! -f ~/.acme.sh/acme.sh ]]; then
+        print_error "acme.sh文件不存在: ~/.acme.sh/acme.sh"
+        return 1
+    fi
+
     mkdir -p /etc/nginx/ssl
     if ~/.acme.sh/acme.sh --install-cert -d "$DOMAIN" \
         --key-file /etc/nginx/ssl/${DOMAIN}.key \
@@ -1599,6 +1613,13 @@ deploy_acme_zerossl() {
     # 申请证书
     echo ""
     print_info "正在申请 ZeroSSL 证书..."
+
+    # 再次确认acme.sh存在
+    if [[ ! -f ~/.acme.sh/acme.sh ]]; then
+        print_error "acme.sh文件不存在: ~/.acme.sh/acme.sh"
+        return 1
+    fi
+
     if ~/.acme.sh/acme.sh --server zerossl --issue -d "$DOMAIN" --nginx; then
         print_success "证书申请成功"
     else
@@ -1609,6 +1630,13 @@ deploy_acme_zerossl() {
     # 安装证书
     echo ""
     print_info "正在安装证书到Nginx..."
+
+    # 再次确认acme.sh存在
+    if [[ ! -f ~/.acme.sh/acme.sh ]]; then
+        print_error "acme.sh文件不存在: ~/.acme.sh/acme.sh"
+        return 1
+    fi
+
     mkdir -p /etc/nginx/ssl
     if ~/.acme.sh/acme.sh --install-cert -d "$DOMAIN" \
         --key-file /etc/nginx/ssl/${DOMAIN}.key \
@@ -1728,6 +1756,13 @@ deploy_acme_buypass() {
     # 申请证书
     echo ""
     print_info "正在申请 Buypass 证书..."
+
+    # 再次确认acme.sh存在
+    if [[ ! -f ~/.acme.sh/acme.sh ]]; then
+        print_error "acme.sh文件不存在: ~/.acme.sh/acme.sh"
+        return 1
+    fi
+
     if ~/.acme.sh/acme.sh --server buypass --issue -d "$DOMAIN" --nginx; then
         print_success "证书申请成功"
     else
@@ -1738,6 +1773,13 @@ deploy_acme_buypass() {
     # 安装证书
     echo ""
     print_info "正在安装证书到Nginx..."
+
+    # 再次确认acme.sh存在
+    if [[ ! -f ~/.acme.sh/acme.sh ]]; then
+        print_error "acme.sh文件不存在: ~/.acme.sh/acme.sh"
+        return 1
+    fi
+
     mkdir -p /etc/nginx/ssl
     if ~/.acme.sh/acme.sh --install-cert -d "$DOMAIN" \
         --key-file /etc/nginx/ssl/${DOMAIN}.key \
@@ -2456,11 +2498,18 @@ configure_nginx_https() {
         mkdir -p ${NGINX_CONF_DIR}
     fi
 
+    # 根据HTTPS端口生成正确的重定向URL
+    if [[ "$HTTPS_PORT" == "443" ]]; then
+        REDIRECT_URL="https://\$server_name\$request_uri"
+    else
+        REDIRECT_URL="https://\$server_name:${HTTPS_PORT}\$request_uri"
+    fi
+
     cat > ${NGINX_CONF_DIR}/${PROJECT_NAME}.conf << EOF
 server {
     listen ${HTTP_PORT};
     server_name ${DOMAIN};
-    return 301 https://\$server_name:\${HTTPS_PORT}\$request_uri;
+    return 301 ${REDIRECT_URL};
 }
 
 server {