diff --git a/README.md b/README.md
index 8acfdf6..b39b445 100644
--- a/README.md
+++ b/README.md
@@ -113,6 +113,14 @@ headers: {
 "groups": ["group1", "group2"]
 }
 
+## 添加新功能的准则
+
+1. 尽量简单, 尽量少修改代码
+2. 不能影响已有的功能
+3. 尽量不新增文件
+4. 尽量使用已有的组件和函数
+5. 前端页面要尽量使用shadcn的组件
+
 ## 许可证
 
 本项目采用 MIT 许可证。详情请见 [LICENSE](LICENSE) 文件。
diff --git a/src/app/api/auth/q58/route.ts b/src/app/api/auth/q58/route.ts
index 07eb483..2901cdf 100644
--- a/src/app/api/auth/q58/route.ts
+++ b/src/app/api/auth/q58/route.ts
@@ -9,14 +9,36 @@ const hostUrl = process.env.NEXT_PUBLIC_HOST_URL as string;
 const discourseHost = process.env.DISCOURSE_HOST as string;
 const clientSecret = process.env.DISCOURSE_SECRET as string;
 
-export async function POST(_req: Request) {
-  const nonce = WordArray.random(16).toString();
-  const return_url = `${hostUrl}/authorize`;
-  const sso = btoa(`nonce=${nonce}&return_sso_url=${return_url}`);
-  const sig = hmacSHA256(sso, clientSecret).toString(Hex);
+export async function POST(req: Request) {
+  try {
+    const nonce = WordArray.random(16).toString();
+    let return_url = `${hostUrl}/authorize`;
 
-  cookies().set(AUTH_NONCE, nonce, { maxAge: 60 * 10 });
-  return Response.json({
-    sso_url: `${discourseHost}/session/sso_provider?sso=${sso}&sig=${sig}`,
-  });
+    // 尝试从请求中获取 return_url
+    try {
+      const body = await req.json();
+      if (body.return_url) {
+        return_url = body.return_url;
+      }
+    } catch (error) {
+      console.error("Failed to parse request body:", error);
+    }
+
+    const sso = btoa(`nonce=${nonce}&return_sso_url=${return_url}`);
+    const sig = hmacSHA256(sso, clientSecret).toString(Hex);
+
+    cookies().set(AUTH_NONCE, nonce, {
+      maxAge: 60 * 10,
+      path: "/",
+      httpOnly: true,
+      secure: process.env.NODE_ENV === "production",
+    });
+
+    return Response.json({
+      sso_url: `${discourseHost}/session/sso_provider?sso=${sso}&sig=${sig}`,
+    });
+  } catch (error) {
+    console.error("SSO 处理错误:", error);
+    return Response.json({ error: "处理登录请求时发生错误" }, { status: 500 });
+  }
 }
diff --git a/src/components/auth/user-auth-form.tsx b/src/components/auth/user-auth-form.tsx
index ddbcec0..8e70a90 100644
--- a/src/components/auth/user-auth-form.tsx
+++ b/src/components/auth/user-auth-form.tsx
@@ -1,7 +1,7 @@
 "use client";
 
 import * as React from "react";
-import { useRouter } from "next/navigation";
+import { useRouter, useSearchParams } from "next/navigation";
 import { Loader2, MessageCircleCode } from "lucide-react";
 
 import { cn } from "@/lib/utils";
@@ -19,33 +19,39 @@ export function UserAuthForm({
   const [isLoading, setIsLoading] = React.useState<boolean>(false);
   const router = useRouter();
   const { toast } = useToast();
+  const searchParams = useSearchParams();
 
-  const signIn = () => {
-    React.startTransition(async () => {
-      try {
-        const response = await fetch("/api/auth/q58", {
-          method: "POST",
-          headers: {
-            "Content-Type": "application/json",
-          },
-        });
-
-        if (!response.ok || response.status !== 200) {
-          throw new Error(response.statusText || "登录请求失败");
-        }
-
-        const data: DiscourseData = await response.json();
-        router.push(data.sso_url);
-      } catch (error) {
-        setIsLoading(false);
-        toast({
-          variant: "destructive",
-          title: "内部服务异常",
-          description: error instanceof Error ? error.message : "登录请求失败",
-        });
+  async function signIn() {
+    try {
+      const body: Record<string, any> = {};
+      const callbackUrl = searchParams?.get("callbackUrl");
+      if (callbackUrl) {
+        body.return_url = callbackUrl;
       }
-    });
-  };
+
+      const response = await fetch("/api/auth/q58", {
+        method: "POST",
+        headers: {
+          "Content-Type": "application/json",
+        },
+        body: JSON.stringify(body),
+      });
+
+      if (!response.ok) {
+        throw new Error("登录请求失败");
+      }
+
+      const data = await response.json();
+      window.location.href = data.sso_url;
+    } catch (error) {
+      console.error("登录错误:", error);
+      toast({
+        title: "错误",
+        description: "登录过程中发生错误，请稍后重试",
+        variant: "destructive",
+      });
+    }
+  }
 
   return (
     <div className={cn("grid gap-3", className)} {...props}>