diff --git a/README.md b/README.md
index 39bd8a2..25da90f 100644
--- a/README.md
+++ b/README.md
@@ -16,7 +16,7 @@ PlexPlaylistSync 是一个用于同步 Plex 播放列表和本地 `.m3u`/`.m3u8`
 
 首次登录时使用用户名和密码连接 Plex 服务器，成功后程序会将获得的 `token` 保存在配置文件中，后续通信仅使用该 `token`，不再保存明文密码。
 默认情况下 Plex 服务器使用 `32400` 端口，可在未修改服务器端口时直接使用该默认值。
-服务器地址字段支持包含 `http://` 或 `https://` 前缀，当提供 `https://` 前缀时将使用 HTTPS 连接。
+登录页面提供选择 `http` 或 `https` 的下拉框，服务器地址输入框只需填写域名或 IP，默认值会从 `config.json` 读取。
 
 ## 安装
 
diff --git a/app/main.py b/app/main.py
index 0b5dce7..d330b87 100644
--- a/app/main.py
+++ b/app/main.py
@@ -1,5 +1,5 @@
 import os
-from app.utils.config import load_config, save_config
+from app.utils.config import load_config, save_config, get_server_settings
 from fastapi import FastAPI, Request, Form
 from fastapi.responses import HTMLResponse, RedirectResponse
 from fastapi.templating import Jinja2Templates
@@ -18,27 +18,54 @@ app.mount("/static", StaticFiles(directory=os.path.join(os.path.dirname(__file__
 async def home(request: Request):
     config = load_config()
     theme = config.get("theme", "auto")
-    return templates.TemplateResponse("login.html", {"request": request, "theme": theme, "path": "/login"})
+    scheme, host, port = get_server_settings(config)
+    return templates.TemplateResponse(
+        "login.html",
+        {
+            "request": request,
+            "theme": theme,
+            "path": "/login",
+            "scheme": scheme,
+            "server_url": host,
+            "port": port,
+        },
+    )
 
 @app.get("/login", response_class=HTMLResponse)
 async def login_page(request: Request):
     config = load_config()
     theme = config.get("theme", "auto")
-    return templates.TemplateResponse("login.html", {"request": request, "theme": theme, "path": "/login"})
+    scheme, host, port = get_server_settings(config)
+    return templates.TemplateResponse(
+        "login.html",
+        {
+            "request": request,
+            "theme": theme,
+            "path": "/login",
+            "scheme": scheme,
+            "server_url": host,
+            "port": port,
+        },
+    )
 
 @app.post("/login", response_class=HTMLResponse)
 async def login(
     request: Request,
     user: str = Form(...),
     pw: str = Form(...),
+    scheme: str = Form("https"),
     url: str = Form(...),
     port: str = Form("32400")
 ):
     config = load_config()
     theme = config.get("theme", "auto")
     try:
-        connect_plex(config, user, pw, url, port)
+        full_url = url
+        if not full_url.startswith("http://") and not full_url.startswith("https://"):
+            full_url = f"{scheme}://{url}"
+        connect_plex(config, user, pw, full_url, port)
         save_config(config)
+        scheme, host, port = get_server_settings(config)
         return templates.TemplateResponse(
             "login.html",
             {
@@ -47,6 +74,9 @@ async def login(
                 "success": True,
                 "theme": theme,
                 "path": "/login",
+                "scheme": scheme,
+                "server_url": host,
+                "port": port,
             },
         )
     except Exception as e:
@@ -58,6 +88,9 @@ async def login(
                 "success": False,
                 "theme": theme,
                 "path": "/login",
+                "scheme": scheme,
+                "server_url": url,
+                "port": port,
             },
         )
 
diff --git a/app/templates/login.html b/app/templates/login.html
index 0c380cd..1103cab 100644
--- a/app/templates/login.html
+++ b/app/templates/login.html
@@ -13,13 +13,20 @@
         <label for="pw" class="form-label">密码</label>
         <input type="password" class="form-control" id="pw" name="pw">
     </div>
+    <div class="mb-3">
+        <label for="scheme" class="form-label">协议</label>
+        <select class="form-select" id="scheme" name="scheme">
+            <option value="http" {% if scheme == 'http' %}selected{% endif %}>http</option>
+            <option value="https" {% if scheme == 'https' %}selected{% endif %}>https</option>
+        </select>
+    </div>
     <div class="mb-3">
         <label for="url" class="form-label">服务器地址</label>
-        <input type="text" class="form-control" id="url" name="url" placeholder="127.0.0.1 或 https://example.com">
+        <input type="text" class="form-control" id="url" name="url" placeholder="127.0.0.1 或 plex.sample.com" value="{{ server_url }}">
     </div>
     <div class="mb-3">
         <label for="port" class="form-label">端口</label>
-        <input type="text" class="form-control" id="port" name="port" value="32400">
+        <input type="text" class="form-control" id="port" name="port" value="{{ port }}">
     </div>
     <button type="submit" class="btn btn-primary">连接</button>
 </form>
diff --git a/app/utils/config.py b/app/utils/config.py
index e1b4668..f67e190 100644
--- a/app/utils/config.py
+++ b/app/utils/config.py
@@ -1,5 +1,6 @@
 import json
 import os
+from urllib.parse import urlparse
 
 CONFIG_PATH = os.path.join(os.path.dirname(__file__), "..", "config.json")
 
@@ -12,3 +13,23 @@ def load_config():
 def save_config(new_config):
     with open(CONFIG_PATH, "w", encoding="utf-8") as f:
         json.dump(new_config, f, indent=4, ensure_ascii=False)
+
+
+def get_server_settings(config):
+    """Return (scheme, host, port) using defaults when not configured."""
+    scheme = "https"
+    host = ""
+    port = config.get("server_port", "32400") or "32400"
+
+    url = config.get("server_url", "")
+    if url:
+        parsed = urlparse(url)
+        if parsed.scheme:
+            scheme = parsed.scheme
+            host = parsed.hostname or parsed.netloc
+            if parsed.port:
+                port = str(parsed.port)
+        else:
+            host = url
+
+    return scheme, host, port