diff --git a/pages/login/index.vue b/pages/login/index.vue
index 021a62b..03480e5 100644
--- a/pages/login/index.vue
+++ b/pages/login/index.vue
@@ -2,7 +2,7 @@
 	<view class="page">
 		<view class="hero-card">
 			<view class="hero-title">进入智慧团委小程序</view>
-			<view class="hero-desc">支持手机号密码登录，也支持微信手机号授权登录。</view>
+			<view class="hero-desc">支持手机号密码登录、微信手机号授权登录，也支持学校统一身份认证登录。</view>
 		</view>
 
 		<view class="login-card">
@@ -21,6 +21,13 @@
 				>
 					微信授权登录
 				</view>
+				<view
+					class="tab-item"
+					:class="{ 'tab-item--active': loginMode === 'gxmu' }"
+					@tap="loginMode = 'gxmu'"
+				>
+					统一身份认证
+				</view>
 			</view>
 
 			<view v-if="loginMode === 'password'" class="form-section">
@@ -46,7 +53,7 @@
 				</view>
 			</view>
 
-			<view v-else class="form-section">
+			<view v-else-if="loginMode === 'wechat'" class="form-section">
 				<view class="wechat-intro">授权后将使用微信手机号完成登录。</view>
 				<button
 					class="submit-btn submit-btn--wechat"
@@ -57,12 +64,36 @@
 					{{ loading ? '登录中...' : '微信授权登录' }}
 				</button>
 			</view>
+
+			<view v-else class="form-section">
+				<view class="wechat-intro">使用学校统一身份认证账号（学号）和密码登录。</view>
+				<uv-input
+					v-model.trim="ssoForm.username"
+					class="field-input"
+					type="text"
+					placeholder="请输入学号"
+					:maxlength="-1"
+					border="none"
+				/>
+				<uv-input
+					v-model="ssoForm.password"
+					class="field-input"
+					type="password"
+					placeholder="请输入统一身份认证密码"
+					:maxlength="-1"
+					border="none"
+					password
+				/>
+				<view class="submit-btn" :class="{ 'submit-btn--loading': loading }" @tap="submitGxmuLogin">
+					{{ loading ? '登录中...' : '统一身份认证登录' }}
+				</view>
+			</view>
 		</view>
 	</view>
 </template>
 
 <script>
-	import { loginByMpWxPhone, loginByPassword } from './service'
+	import { loginByGxmuSso, loginByMpWxPhone, loginByPassword } from './service'
 	import { hasToken, setAuthInfo } from '../../utils/request'
 
 	export default {
@@ -75,6 +106,10 @@
 				form: {
 					username: '',
 					password: ''
+				},
+				ssoForm: {
+					username: '',
+					password: ''
 				}
 			}
 		},
@@ -137,6 +172,35 @@
 					this.loading = false
 				}
 			},
+			async submitGxmuLogin() {
+				if (this.loading) {
+					return
+				}
+				if (!this.ssoForm.username) {
+					this.showToast('请输入学号')
+					return
+				}
+				if (!this.ssoForm.password) {
+					this.showToast('请输入统一身份认证密码')
+					return
+				}
+				this.loading = true
+				try {
+					const result = await loginByGxmuSso({
+						username: this.ssoForm.username,
+						password: this.ssoForm.password
+					})
+					setAuthInfo(result)
+					this.showToast('登录成功')
+					setTimeout(() => {
+						this.navigateAfterLogin()
+					}, 300)
+				} catch (error) {
+					this.showToast((error && error.message) || '统一身份认证登录失败')
+				} finally {
+					this.loading = false
+				}
+			},
 			async handleWxPhoneLogin(event) {
 				if (this.loading) {
 					return
@@ -229,7 +293,7 @@
 
 	.tab-row {
 		display: grid;
-		grid-template-columns: repeat(2, minmax(0, 1fr));
+		grid-template-columns: repeat(3, minmax(0, 1fr));
 		gap: 14rpx;
 	}
 
@@ -238,7 +302,7 @@
 		border-radius: 22rpx;
 		background: #edf5ff;
 		color: #1496f2;
-		font-size: 24rpx;
+		font-size: 22rpx;
 		font-weight: 600;
 		line-height: 82rpx;
 		text-align: center;
diff --git a/pages/login/service.js b/pages/login/service.js
index 3a67fc9..67fbd97 100644
--- a/pages/login/service.js
+++ b/pages/login/service.js
@@ -1,4 +1,4 @@
-import { DEFAULT_TENANT_ID, post } from '../../utils/request'
+import { DEFAULT_TENANT_ID, get, post } from '../../utils/request'
 
 export function loginByPassword(data) {
 	return post(
@@ -19,3 +19,22 @@ export function loginByMpWxPhone(data) {
 		auth: false
 	})
 }
+
+// 学校统一身份认证登录：学号 + 统一身份认证密码，由后端调认证平台校验
+export function loginByGxmuSso(data) {
+	return post(
+		'/sso/login',
+		{
+			username: data.username,
+			password: data.password
+		},
+		{
+			auth: false
+		}
+	)
+}
+
+// 统一身份认证登录是否已开通（后端未配置 appid/appsecret 时返回 false）
+export function fetchGxmuSsoAvailable() {
+	return get('/sso/available', {}, { auth: false })
+}