diff --git a/backend/package.json b/backend/package.json
index 3c9d13a..83519e5 100644
--- a/backend/package.json
+++ b/backend/package.json
@@ -15,7 +15,6 @@
   },
   "dependencies": {
     "axios": "^1.6.0",
-    "bcryptjs": "^2.4.3",
     "cors": "^2.8.5",
     "dotenv": "^16.3.1",
     "express": "^4.18.2",
@@ -24,7 +23,6 @@
     "mysql2": "^3.6.5"
   },
   "devDependencies": {
-    "@types/bcryptjs": "^2.4.6",
     "@types/cors": "^2.8.17",
     "@types/express": "^4.17.21",
     "@types/jest": "^29.5.11",
diff --git a/backend/src/db/init.sql b/backend/src/db/init.sql
index 0c59648..99435e5 100644
--- a/backend/src/db/init.sql
+++ b/backend/src/db/init.sql
@@ -10,7 +10,7 @@ USE employee_performance;
 CREATE TABLE IF NOT EXISTS user (
   user_id     INT PRIMARY KEY AUTO_INCREMENT COMMENT '用户ID',
   username    VARCHAR(50)  NOT NULL UNIQUE COMMENT '用户名（工号）',
-  password    VARCHAR(255) NOT NULL COMMENT '密码（bcrypt加密）',
+  password    VARCHAR(255) NOT NULL COMMENT '密码（明文存储，测试环境使用）',
   name        VARCHAR(50)  NOT NULL COMMENT '姓名',
   role        ENUM('employee', 'manager', 'generalManager') NOT NULL COMMENT '角色',
   department  VARCHAR(50)  NOT NULL COMMENT '部门',
diff --git a/backend/src/db/seed.sql b/backend/src/db/seed.sql
index b14686e..9fa4b56 100644
--- a/backend/src/db/seed.sql
+++ b/backend/src/db/seed.sql
@@ -1,37 +1,37 @@
 -- 测试数据插入脚本
 USE employee_performance;
 
--- 插入测试用户（密码都是 123456，已用 bcrypt 加密）
--- bcrypt hash for '123456': $2a$10$N9qo8uLOickgx2ZMRZoMyeIjZAgcfl7p92ldGxad68LJZdL17lhWy
+-- 插入测试用户（所有用户密码均为123456，明文存储）
+-- 注意：此版本使用明文密码，仅用于测试环境。生产环境必须使用加密密码。
 
 -- 1. 总经理
 INSERT INTO user (username, password, name, role, department, position, manager_id, status)
-VALUES ('gm001', '$2a$10$N9qo8uLOickgx2ZMRZoMyeIjZAgcfl7p92ldGxad68LJZdL17lhWy', '张总', 'generalManager', '管理层', '总经理', NULL, 'active')
+VALUES ('gm001', '123456', '张总', 'generalManager', '管理层', '总经理', NULL, 'active')
 ON DUPLICATE KEY UPDATE username=username;
 
 -- 2. 部门经理（技术部）
 INSERT INTO user (username, password, name, role, department, position, manager_id, status)
-VALUES ('mgr001', '$2a$10$N9qo8uLOickgx2ZMRZoMyeIjZAgcfl7p92ldGxad68LJZdL17lhWy', '李经理', 'manager', '技术部', '技术经理', 1, 'active')
+VALUES ('mgr001', '123456', '李经理', 'manager', '技术部', '技术经理', 1, 'active')
 ON DUPLICATE KEY UPDATE username=username;
 
 -- 3. 部门经理（销售部）
 INSERT INTO user (username, password, name, role, department, position, manager_id, status)
-VALUES ('mgr002', '$2a$10$N9qo8uLOickgx2ZMRZoMyeIjZAgcfl7p92ldGxad68LJZdL17lhWy', '王经理', 'manager', '销售部', '销售经理', 1, 'active')
+VALUES ('mgr002', '123456', '王经理', 'manager', '销售部', '销售经理', 1, 'active')
 ON DUPLICATE KEY UPDATE username=username;
 
 -- 4. 员工（技术部）
 INSERT INTO user (username, password, name, role, department, position, manager_id, status)
 VALUES 
-('emp001', '$2a$10$N9qo8uLOickgx2ZMRZoMyeIjZAgcfl7p92ldGxad68LJZdL17lhWy', '张三', 'employee', '技术部', '前端工程师', 2, 'active'),
-('emp002', '$2a$10$N9qo8uLOickgx2ZMRZoMyeIjZAgcfl7p92ldGxad68LJZdL17lhWy', '李四', 'employee', '技术部', '后端工程师', 2, 'active'),
-('emp003', '$2a$10$N9qo8uLOickgx2ZMRZoMyeIjZAgcfl7p92ldGxad68LJZdL17lhWy', '王五', 'employee', '技术部', '测试工程师', 2, 'active')
+('emp001', '123456', '张三', 'employee', '技术部', '前端工程师', 2, 'active'),
+('emp002', '123456', '李四', 'employee', '技术部', '后端工程师', 2, 'active'),
+('emp003', '123456', '王五', 'employee', '技术部', '测试工程师', 2, 'active')
 ON DUPLICATE KEY UPDATE username=username;
 
 -- 5. 员工（销售部）
 INSERT INTO user (username, password, name, role, department, position, manager_id, status)
 VALUES 
-('emp004', '$2a$10$N9qo8uLOickgx2ZMRZoMyeIjZAgcfl7p92ldGxad68LJZdL17lhWy', '赵六', 'employee', '销售部', '销售专员', 3, 'active'),
-('emp005', '$2a$10$N9qo8uLOickgx2ZMRZoMyeIjZAgcfl7p92ldGxad68LJZdL17lhWy', '孙七', 'employee', '销售部', '销售专员', 3, 'active')
+('emp004', '123456', '赵六', 'employee', '销售部', '销售专员', 3, 'active'),
+('emp005', '123456', '孙七', 'employee', '销售部', '销售专员', 3, 'active')
 ON DUPLICATE KEY UPDATE username=username;
 
 -- 插入默认考核规则配置
diff --git a/backend/src/routes/employee.ts b/backend/src/routes/employee.ts
index eb02d02..a9c907f 100644
--- a/backend/src/routes/employee.ts
+++ b/backend/src/routes/employee.ts
@@ -2,7 +2,6 @@ import { Router, Request, Response } from 'express';
 import { authenticate } from '../middlewares/authenticate';
 import { authorize } from '../middlewares/authorize';
 import pool from '../config/database';
-import bcrypt from 'bcryptjs';
 
 const router = Router();
 router.use(authenticate);
@@ -47,13 +46,12 @@ router.post('/create', authorize('manager', 'generalManager'), async (req: Reque
       return res.status(400).json({ code: 400, message: '用户名已存在' });
     }
 
-    const hashedPassword = await bcrypt.hash(password, 10);
     const managerId = user.role === 'manager' ? user.userId : null;
 
     const [result] = await pool.query<any>(
       `INSERT INTO user (username, password, name, role, department, position, manager_id, status)
        VALUES (?, ?, ?, 'employee', ?, ?, ?, 'active')`,
-      [username, hashedPassword, name, department, position, managerId]
+      [username, '123456', name, department, position, managerId]
     );
 
     return res.json({ code: 200, message: '员工账号创建成功', data: { userId: result.insertId } });
diff --git a/backend/src/services/AuthService.ts b/backend/src/services/AuthService.ts
index 7bea849..96d19a5 100644
--- a/backend/src/services/AuthService.ts
+++ b/backend/src/services/AuthService.ts
@@ -1,4 +1,5 @@
-import bcrypt from 'bcryptjs';
+// 注意：此版本使用明文密码验证，所有用户密码均为123456（仅用于测试环境）
+// 生产环境必须使用加密密码存储和验证
 import jwt from 'jsonwebtoken';
 import { findByUsername } from '../dao/UserDAO';
 import { JWT_SECRET, JWT_EXPIRES_IN } from '../config/jwt';
@@ -15,7 +16,7 @@ export async function login(
     throw new Error('用户名或密码错误');
   }
 
-  const passwordMatch = await bcrypt.compare(password, user.password);
+  const passwordMatch = password === user.password;
   if (!passwordMatch) {
     throw new Error('用户名或密码错误');
   }
diff --git a/backend/src/services/__tests__/AuthService.property.test.ts b/backend/src/services/__tests__/AuthService.property.test.ts
index f6d9717..1e10b9e 100644
--- a/backend/src/services/__tests__/AuthService.property.test.ts
+++ b/backend/src/services/__tests__/AuthService.property.test.ts
@@ -1,5 +1,4 @@
 import * as fc from 'fast-check';
-import bcrypt from 'bcryptjs';
 import jwt from 'jsonwebtoken';
 import { login } from '../AuthService';
 import * as UserDAO from '../../dao/UserDAO';
@@ -29,11 +28,10 @@ describe('Property 1: 认证正确性', () => {
           position: fc.string({ minLength: 1, maxLength: 20 }),
         }),
         async ({ username, password, role, userId, name, department, position }) => {
-          const hashedPassword = bcrypt.hashSync(password, 1); // cost 1 for speed
           const userRow: UserDAO.UserRow = {
             user_id: userId,
             username,
-            password: hashedPassword,
+            password: password,
             name,
             role,
             department,
@@ -70,11 +68,10 @@ describe('Property 1: 认证正确性', () => {
           role: fc.constantFrom<UserRole>(...ROLES),
         }).filter(({ correctPassword, wrongPassword }) => correctPassword !== wrongPassword),
         async ({ username, correctPassword, wrongPassword, role }) => {
-          const hashedPassword = bcrypt.hashSync(correctPassword, 1);
           mockFindByUsername.mockResolvedValue({
             user_id: 1,
             username,
-            password: hashedPassword,
+            password: correctPassword,
             name: '测试',
             role,
             department: '部门',
@@ -117,11 +114,10 @@ describe('Property 1: 认证正确性', () => {
           requestedRole: fc.constantFrom<UserRole>(...ROLES),
         }).filter(({ storedRole, requestedRole }) => storedRole !== requestedRole),
         async ({ username, password, storedRole, requestedRole }) => {
-          const hashedPassword = bcrypt.hashSync(password, 1);
           mockFindByUsername.mockResolvedValue({
             user_id: 1,
             username,
-            password: hashedPassword,
+            password: password,
             name: '测试',
             role: storedRole,
             department: '部门',
diff --git a/backend/src/services/__tests__/AuthService.test.ts b/backend/src/services/__tests__/AuthService.test.ts
index 9c1a824..78e4c8a 100644
--- a/backend/src/services/__tests__/AuthService.test.ts
+++ b/backend/src/services/__tests__/AuthService.test.ts
@@ -1,4 +1,3 @@
-import bcrypt from 'bcryptjs';
 import jwt from 'jsonwebtoken';
 import { login } from '../AuthService';
 import * as UserDAO from '../../dao/UserDAO';
@@ -10,7 +9,7 @@ const mockFindByUsername = UserDAO.findByUsername as jest.MockedFunction<typeof
 const baseUser: UserDAO.UserRow = {
   user_id: 1,
   username: 'emp001',
-  password: bcrypt.hashSync('password123', 10),
+  password: 'password123',
   name: '张三',
   role: 'employee',
   department: '研发部',
diff --git a/backend/tmpclaude-043a-cwd b/backend/tmpclaude-043a-cwd
new file mode 100644
index 0000000..c189ea7
--- /dev/null
+++ b/backend/tmpclaude-043a-cwd
@@ -0,0 +1 @@
+/c/Users/99095/Desktop/优一科技/performance-evaluation-system/backend
diff --git a/backend/tmpclaude-47ab-cwd b/backend/tmpclaude-47ab-cwd
new file mode 100644
index 0000000..c189ea7
--- /dev/null
+++ b/backend/tmpclaude-47ab-cwd
@@ -0,0 +1 @@
+/c/Users/99095/Desktop/优一科技/performance-evaluation-system/backend
diff --git a/backend/update-accounts.ts b/backend/update-accounts.ts
index 057df03..9a8f559 100644
--- a/backend/update-accounts.ts
+++ b/backend/update-accounts.ts
@@ -1,10 +1,9 @@
 import * as dotenv from 'dotenv';
 dotenv.config();
 import pool from './src/config/database';
-import bcrypt from 'bcryptjs';
 
 async function run() {
-  const hash = await bcrypt.hash('123456', 10);
+  const password = '123456';
 
   // 删除 mgr002
   await pool.query('DELETE FROM user WHERE username = ?', ['mgr002']);
@@ -13,14 +12,14 @@ async function run() {
   // 更新 gm001 → lister / 李总 / 总经理
   await pool.query(
     'UPDATE user SET username = ?, name = ?, password = ? WHERE username = ?',
-    ['lister', '李总', hash, 'gm001']
+    ['lister', '李总', password, 'gm001']
   );
   console.log('更新 gm001 → lister');
 
   // 更新 mgr001 → xinxin / 孙薪薪 / 管理层
   await pool.query(
     'UPDATE user SET username = ?, name = ?, password = ? WHERE username = ?',
-    ['xinxin', '孙薪薪', hash, 'mgr001']
+    ['xinxin', '孙薪薪', password, 'mgr001']
   );
   console.log('更新 mgr001 → xinxin');
 
diff --git a/backend/update-passwords-final.ts b/backend/update-passwords-final.ts
index c356f2a..6d08676 100644
--- a/backend/update-passwords-final.ts
+++ b/backend/update-passwords-final.ts
@@ -1,17 +1,15 @@
 import * as dotenv from 'dotenv';
 dotenv.config();
 import pool from './src/config/database';
-import bcrypt from 'bcryptjs';
 
 async function run() {
-  const xinxinHash = await bcrypt.hash('sxx980623', 10);
-  const listerHash = await bcrypt.hash('lister123', 10);
+  const password = '123456';
 
-  await pool.query('UPDATE user SET password = ? WHERE username = ?', [xinxinHash, 'xinxin']);
-  await pool.query('UPDATE user SET password = ? WHERE username = ?', [listerHash, 'lister']);
+  await pool.query('UPDATE user SET password = ? WHERE username = ?', [password, 'xinxin']);
+  await pool.query('UPDATE user SET password = ? WHERE username = ?', [password, 'lister']);
 
-  console.log('xinxin 密码已更新为 sxx980623');
-  console.log('lister 密码已更新为 lister123');
+  console.log('xinxin 密码已更新为 123456');
+  console.log('lister 密码已更新为 123456');
 
   await pool.end();
 }
diff --git a/backend/update-passwords.ts b/backend/update-passwords.ts
index 8f0b32d..01b8ed0 100644
--- a/backend/update-passwords.ts
+++ b/backend/update-passwords.ts
@@ -1,5 +1,4 @@
 import mysql from 'mysql2/promise';
-import bcrypt from 'bcryptjs';
 import dotenv from 'dotenv';
 
 dotenv.config();
@@ -13,26 +12,20 @@ async function updatePasswords() {
       password: process.env.DB_PASSWORD || '',
       database: process.env.DB_NAME || 'employee_performance',
     });
-    
-    console.log('生成新的密码哈希...');
-    const hash = await bcrypt.hash('123456', 10);
-    console.log('新哈希:', hash);
-    
-    // 测试旧哈希
-    const oldHash = '$2a$10$N9qo8uLOickgx2ZMRZoMyeIjZAgcfl7p92ldGxad68LJZdL17lhWy';
-    const matchOld = await bcrypt.compare('123456', oldHash);
-    console.log('旧哈希验证:', matchOld);
-    
+
+    console.log('设置所有用户密码为123456（明文）...');
+    const password = '123456';
+
     // 更新所有用户密码
-    await conn.query('UPDATE user SET password = ?', [hash]);
-    console.log('✓ 所有用户密码已更新');
-    
+    await conn.query('UPDATE user SET password = ?', [password]);
+    console.log('✓ 所有用户密码已更新为123456');
+
     // 验证更新
     const [rows] = await conn.query('SELECT username, password FROM user LIMIT 1');
     const user = (rows as any)[0];
-    const matchNew = await bcrypt.compare('123456', user.password);
-    console.log('新密码验证:', matchNew);
-    
+    const passwordMatch = user.password === '123456';
+    console.log('密码验证:', passwordMatch ? '成功' : '失败');
+
     await conn.end();
     process.exit(0);
   } catch (error: any) {
diff --git a/tmpclaude-5a95-cwd b/tmpclaude-5a95-cwd
new file mode 100644
index 0000000..0a8904c
--- /dev/null
+++ b/tmpclaude-5a95-cwd
@@ -0,0 +1 @@
+/c/Users/99095/Desktop/优一科技/performance-evaluation-system
diff --git a/tmpclaude-98cf-cwd b/tmpclaude-98cf-cwd
new file mode 100644
index 0000000..0a8904c
--- /dev/null
+++ b/tmpclaude-98cf-cwd
@@ -0,0 +1 @@
+/c/Users/99095/Desktop/优一科技/performance-evaluation-system
diff --git a/tmpclaude-ad8d-cwd b/tmpclaude-ad8d-cwd
new file mode 100644
index 0000000..0a8904c
--- /dev/null
+++ b/tmpclaude-ad8d-cwd
@@ -0,0 +1 @@
+/c/Users/99095/Desktop/优一科技/performance-evaluation-system
diff --git a/tmpclaude-cec9-cwd b/tmpclaude-cec9-cwd
new file mode 100644
index 0000000..0a8904c
--- /dev/null
+++ b/tmpclaude-cec9-cwd
@@ -0,0 +1 @@
+/c/Users/99095/Desktop/优一科技/performance-evaluation-system
diff --git a/tmpclaude-d65b-cwd b/tmpclaude-d65b-cwd
new file mode 100644
index 0000000..0a8904c
--- /dev/null
+++ b/tmpclaude-d65b-cwd
@@ -0,0 +1 @@
+/c/Users/99095/Desktop/优一科技/performance-evaluation-system
diff --git a/tmpclaude-dcee-cwd b/tmpclaude-dcee-cwd
new file mode 100644
index 0000000..0a8904c
--- /dev/null
+++ b/tmpclaude-dcee-cwd
@@ -0,0 +1 @@
+/c/Users/99095/Desktop/优一科技/performance-evaluation-system