diff --git a/tone-page-server/src/user/entities/user-session.entity.ts b/tone-page-server/src/user/entities/user-session.entity.ts
new file mode 100644
index 0000000..99d226a
--- /dev/null
+++ b/tone-page-server/src/user/entities/user-session.entity.ts
@@ -0,0 +1,20 @@
+import { Column, CreateDateColumn, DeleteDateColumn, Entity, Index, PrimaryGeneratedColumn } from "typeorm";
+
+@Entity()
+@Index(['sessionId', 'userId'])
+export class UserSession {
+    @PrimaryGeneratedColumn('uuid')
+    id: string;
+
+    @Column({ length: 36 })
+    sessionId: string;
+
+    @Column({ length: 36 })
+    userId: string;
+
+    @CreateDateColumn({ precision: 3 })
+    createdAt: Date;
+
+    @DeleteDateColumn({ nullable: true, precision: 3 })
+    deletedAt: Date;
+}
\ No newline at end of file
diff --git a/tone-page-server/src/user/user.entity.ts b/tone-page-server/src/user/user.entity.ts
deleted file mode 100644
index de49b31..0000000
--- a/tone-page-server/src/user/user.entity.ts
+++ /dev/null
@@ -1,43 +0,0 @@
-import { Column, CreateDateColumn, DeleteDateColumn, Entity, Index, PrimaryGeneratedColumn, UpdateDateColumn } from "typeorm";
-
-@Entity()
-export class User {
-    @PrimaryGeneratedColumn()
-    id: number;
-
-    @Column('uuid', { unique: true, default: () => 'gen_random_uuid()' })
-    userId: string;
-
-    @Column({ length: 32 })
-    @Index({ unique: true })
-    username: string;
-
-    @Column({ length: 30 })
-    nickname: string;
-
-    @Column({ nullable: true, type: 'char', length: 32 })
-    salt: string;
-
-    @Column({ nullable: true, type: 'char', length: 64 })
-    password_hash: string;
-
-    @Column({ nullable: true, length: 254 })// RFC 5321
-    @Index({ unique: true })
-    email: string;
-
-    @Column({ nullable: true, length: 20 })// China Mainland
-    @Index({ unique: true })
-    phone: string;
-
-    @Column({ nullable: true })
-    avatar: string;
-
-    @CreateDateColumn({ precision: 3 })
-    created_at: Date;
-
-    @UpdateDateColumn({ precision: 3 })
-    updated_at: Date;
-
-    @DeleteDateColumn({ nullable: true, precision: 3 })
-    deleted_at: Date;
-}
\ No newline at end of file