diff --git a/apps/backend/src/sms/dto/send-login-sms.dto.ts b/apps/backend/src/sms/dto/send-login-sms.dto.ts
new file mode 100644
index 0000000..d0373bb
--- /dev/null
+++ b/apps/backend/src/sms/dto/send-login-sms.dto.ts
@@ -0,0 +1,6 @@
+import { IsPhoneNumber } from "class-validator";
+
+export class SendLoginSmsDto {
+    @IsPhoneNumber('CN', { message: '请输入有效的中国大陆手机号' })
+    phone: string;
+}
\ No newline at end of file
diff --git a/apps/backend/src/sms/entity/sms-record.entity.ts b/apps/backend/src/sms/entity/sms-record.entity.ts
new file mode 100644
index 0000000..4786632
--- /dev/null
+++ b/apps/backend/src/sms/entity/sms-record.entity.ts
@@ -0,0 +1,30 @@
+import { Column, CreateDateColumn, Entity, Index, PrimaryGeneratedColumn } from "typeorm";
+
+@Entity()
+@Index('IDX_SMS_PHONE_TYPE', ['phone', 'type'])
+@Index('IDX_SMS_EXPIRED', ['expiredAt'])
+export class SmsRecord {
+    @PrimaryGeneratedColumn('identity')
+    id: number;
+
+    @Column()
+    phone: string;
+
+    @Column()
+    type: string;
+
+    @Column()
+    code: string;
+
+    @Column({ type: 'smallint', default: 0 })
+    tryCount: number;
+
+    @CreateDateColumn({ precision: 3 })
+    createdAt: Date;
+
+    @Column({ type: 'timestamp with time zone', precision: 3 })
+    expiredAt: Date;
+
+    @Column({ type: 'timestamp with time zone', precision: 3, nullable: true })
+    usedAt: Date;
+}
\ No newline at end of file