diff --git a/apps/frontend/lib/api/client.ts b/apps/frontend/lib/api/client.ts
index 70130f6..319fcbe 100644
--- a/apps/frontend/lib/api/client.ts
+++ b/apps/frontend/lib/api/client.ts
@@ -46,4 +46,5 @@ export async function clientFetch<T = unknown>(
 
 
 export * as AuthAPI from './endpoints/auth.client'
-export * as UserAPI from './endpoints/user.client'
\ No newline at end of file
+export * as UserAPI from './endpoints/user.client'
+export * as SmsAPI from './endpoints/sms.client'
\ No newline at end of file
diff --git a/apps/frontend/lib/api/endpoints/sms.client.ts b/apps/frontend/lib/api/endpoints/sms.client.ts
new file mode 100644
index 0000000..4ae2336
--- /dev/null
+++ b/apps/frontend/lib/api/endpoints/sms.client.ts
@@ -0,0 +1,15 @@
+import { clientFetch } from "../client";
+import { APIError } from "../common";
+
+export async function sendLoginSms(phone: string) {
+    phone = phone.trim();
+
+    if (!/^1[3-9]\d{9}$/.test(phone)) {
+        throw new APIError('请输入合法的中国大陆手机号');
+    }
+
+    return clientFetch('/api/sms/send/login', {
+        method: 'POST',
+        body: JSON.stringify({ phone })
+    })
+}
\ No newline at end of file