diff --git a/src/app/(auth)/authorize/page.tsx b/src/app/(auth)/authorize/page.tsx
index 1e839b2..5cb738f 100644
--- a/src/app/(auth)/authorize/page.tsx
+++ b/src/app/(auth)/authorize/page.tsx
@@ -5,6 +5,8 @@ import Link from "next/link";
 import { useRouter, useSearchParams } from "next/navigation";
 import { MessageCircleCode } from "lucide-react";
 
+import { UserAuthForm } from "@/components/auth/user-auth-form";
+
 export default function AuthPage() {
   const router = useRouter();
   const searchParams = useSearchParams();
@@ -12,6 +14,7 @@ export default function AuthPage() {
   useEffect(() => {
     // 如果有 OAuth 参数，重定向回 /oauth/authorize
     if (searchParams.has("response_type") && searchParams.has("client_id")) {
+      console.log("检测到 OAuth 参数，准备重定向到 /oauth/authorize");
       router.replace(`/oauth/authorize?${searchParams.toString()}`);
       return;
     }
@@ -26,6 +29,7 @@ export default function AuthPage() {
           <span style={{ fontFamily: "Bahamas Bold" }}>Q58论坛</span>
         </div>
       </div>
+      <UserAuthForm />
       <p className="px-8 text-center text-sm text-muted-foreground">
         By clicking continue, you agree to our{" "}
         <Link
diff --git a/src/components/auth/user-auth-form.tsx b/src/components/auth/user-auth-form.tsx
index 4522c37..933153e 100644
--- a/src/components/auth/user-auth-form.tsx
+++ b/src/components/auth/user-auth-form.tsx
@@ -3,6 +3,7 @@
 import * as React from "react";
 import { useRouter, useSearchParams } from "next/navigation";
 import { Loader2, MessageCircleCode } from "lucide-react";
+import { signIn } from "next-auth/react";
 
 import { cn } from "@/lib/utils";
 import { useToast } from "@/hooks/use-toast";
@@ -21,11 +22,28 @@ export function UserAuthForm({
   const { toast } = useToast();
   const searchParams = useSearchParams();
 
-  async function signIn() {
+  async function handleSignIn() {
     try {
-      const body: Record<string, any> = {};
+      // 如果有 SSO 参数，使用 credentials provider 登录
+      if (searchParams.has("sso") && searchParams.has("sig")) {
+        console.log("检测到 SSO 参数，使用 credentials provider 登录");
+        const result = await signIn("credentials", {
+          sso: searchParams.get("sso"),
+          sig: searchParams.get("sig"),
+          redirect: false,
+        });
 
-      // 如果有 OAuth 参数，作为 return_url 传递
+        if (result?.error) {
+          throw new Error(result.error);
+        }
+
+        // 登录成功后刷新页面
+        router.refresh();
+        return;
+      }
+
+      // 如果有 OAuth 参数，发起 SSO 登录
+      const body: Record<string, any> = {};
       if (searchParams.has("response_type") && searchParams.has("client_id")) {
         body.return_url = `/oauth/authorize?${searchParams.toString()}`;
         console.log("正在处理 OAuth 登录，return_url:", body.return_url);
@@ -70,7 +88,7 @@ export function UserAuthForm({
         className={cn(buttonVariants({ variant: "outline" }))}
         onClick={() => {
           setIsLoading(true);
-          signIn();
+          handleSignIn();
         }}
         disabled={isLoading}
       >