diff --git a/apps/backend/src/auth/entity/passkey-credential.entity.ts b/apps/backend/src/auth/entity/passkey-credential.entity.ts
new file mode 100644
index 0000000..9c1719c
--- /dev/null
+++ b/apps/backend/src/auth/entity/passkey-credential.entity.ts
@@ -0,0 +1,36 @@
+import { User } from "src/user/entities/user.entity";
+import { Column, CreateDateColumn, Entity, Index, ManyToOne, PrimaryGeneratedColumn, UpdateDateColumn } from "typeorm";
+
+@Entity()
+@Index(['user'])
+export class PasskeyCredential {
+    @PrimaryGeneratedColumn('uuid')
+    id: string;
+
+    // 关联用户
+    @ManyToOne(() => User, user => user.passkeys, { onDelete: 'CASCADE' })
+    user: User;
+
+    // WebAuthn 必需字段
+    @Column({ length: 255 })
+    name: string; // 用户自定义名称，如 "iPhone", "工作笔记本"
+
+    @Column({ unique: true })
+    credentialId: string; // Base64URL 编码的 credentialId（唯一标识）
+
+    @Column({ type: 'text' })
+    publicKey: string; // Base64URL 编码的公钥（SPKI 格式）
+
+    @Column({ type: 'int' })
+    signCount: number; // 防重放攻击，每次签名递增
+
+    // 是否已验证（注册时验证，登录时更新）
+    @Column({ default: false })
+    verified: boolean;
+
+    @CreateDateColumn()
+    createdAt: Date;
+
+    @UpdateDateColumn()
+    updatedAt: Date;
+}
\ No newline at end of file
diff --git a/apps/backend/src/user/entities/user.entity.ts b/apps/backend/src/user/entities/user.entity.ts
index 3a9df52..9b5d206 100644
--- a/apps/backend/src/user/entities/user.entity.ts
+++ b/apps/backend/src/user/entities/user.entity.ts
@@ -1,3 +1,4 @@
+import { PasskeyCredential } from 'src/auth/entity/passkey-credential.entity';
 import { Role } from 'src/auth/role.enum';
 import {
   BeforeInsert,
@@ -6,6 +7,7 @@ import {
   DeleteDateColumn,
   Entity,
   Index,
+  OneToMany,
   PrimaryGeneratedColumn,
   UpdateDateColumn,
 } from 'typeorm';
@@ -94,6 +96,9 @@ export class User {
 
   @Column({ type: 'jsonb', default: [] })
   roles: RoleItem[];
+
+  @OneToMany(() => PasskeyCredential, credential => credential.user)
+  passkeys?: PasskeyCredential[];
 }
 
 export class UserPublicProfile {