diff --git a/port.sh b/port.sh
index f75eb25..93e9fa2 100644
--- a/port.sh
+++ b/port.sh
@@ -44,25 +44,29 @@ detect_system() {
         OS="unknown"
     fi
 
-    if command -v systemctl > /dev/null 2>&1 && systemctl --version > /dev/null 2>&1; then
-        INIT_SYS="systemd"
-    elif command -v rc-service > /dev/null 2>&1; then
-        INIT_SYS="openrc"
-    else
-        # Alpine 下尝试自动安装 OpenRC
-        if [ "$OS" = "alpine" ]; then
+    # Alpine 优先走 OpenRC，不依赖 systemctl 检测
+    if [ "$OS" = "alpine" ]; then
+        if command -v rc-service > /dev/null 2>&1; then
+            INIT_SYS="openrc"
+        else
             echo -e "${YELLOW}OpenRC 未安装，正在安装...${NC}"
             apk add --no-cache openrc
             mkdir -p /run/openrc
             touch /run/openrc/softlevel
             if command -v rc-service > /dev/null 2>&1; then
                 INIT_SYS="openrc"
+            else
+                echo -e "${RED}错误: OpenRC 安装失败${NC}"
+                exit 1
             fi
         fi
-        if [ -z "$INIT_SYS" ]; then
-            echo -e "${RED}错误: 不支持的初始化系统（需要 systemd 或 OpenRC）${NC}"
-            exit 1
-        fi
+    elif command -v systemctl > /dev/null 2>&1 && [ -d /etc/systemd/system ]; then
+        INIT_SYS="systemd"
+    elif command -v rc-service > /dev/null 2>&1; then
+        INIT_SYS="openrc"
+    else
+        echo -e "${RED}错误: 不支持的初始化系统（需要 systemd 或 OpenRC）${NC}"
+        exit 1
     fi
 
     echo -e "${BLUE}系统: ${OS} | 初始化系统: ${INIT_SYS}${NC}"