diff --git a/.env.example b/.env.example
new file mode 100644
index 0000000..e0811f4
--- /dev/null
+++ b/.env.example
@@ -0,0 +1,7 @@
+# Playwright 浏览器路径
+PLAYWRIGHT_BROWSERS_PATH=C:\Users\Administrator\AppData\Roaming\erpauto\ms-playwright
+
+# 用友BIP登录配置
+BIP_URL=https://68.11.34.30:8082/yonbip/resources/uap/rbac/login/main/index.html
+BIP_USERNAME=your_username
+BIP_PASSWORD=your_password
diff --git a/requirements.txt b/requirements.txt
new file mode 100644
index 0000000..0d2473f
--- /dev/null
+++ b/requirements.txt
@@ -0,0 +1,2 @@
+playwright>=1.40.0
+python-dotenv>=1.0.0
diff --git a/tests/__init__.py b/tests/__init__.py
new file mode 100644
index 0000000..2c62db7
--- /dev/null
+++ b/tests/__init__.py
@@ -0,0 +1,3 @@
+"""
+测试模块
+"""
diff --git a/tests/test_auth_config.py b/tests/test_auth_config.py
new file mode 100644
index 0000000..c053074
--- /dev/null
+++ b/tests/test_auth_config.py
@@ -0,0 +1,44 @@
+"""
+Test if auth module configuration is correct
+"""
+
+from playwright.sync_api import sync_playwright
+from dotenv import load_dotenv
+from pathlib import Path
+import os
+
+# Load environment variables
+PROJECT_ROOT = Path(__file__).resolve().parent.parent
+load_dotenv(PROJECT_ROOT / ".env")
+
+# Configure browser path
+os.environ["PLAYWRIGHT_BROWSERS_PATH"] = os.getenv("PLAYWRIGHT_BROWSERS_PATH")
+
+print("=" * 50)
+print("ERP System Configuration Check")
+print("=" * 50)
+
+# Display configuration information
+print(f"Browser Path: {os.getenv('PLAYWRIGHT_BROWSERS_PATH')}")
+print(f"ERP URL: {os.getenv('ERP_URL')}")
+print(f"Username: {os.getenv('ERP_USERNAME')}")
+print(f"Password: {'*' * len(os.getenv('ERP_PASSWORD', ''))}")
+print(f"Headless Mode: {os.getenv('ERP_HEADLESS')}")
+print(f"Ignore HTTPS Errors: {os.getenv('ERP_IGNORE_HTTPS_ERRORS')}")
+print(f"Auto Close Browser: {os.getenv('ERP_AUTO_CLOSE_BROWSER')}")
+
+print("\n" + "=" * 50)
+print("Check Playwright Browser")
+print("=" * 50)
+
+with sync_playwright() as p:
+    chromium_path = p.chromium.executable_path
+    print(f"Chromium Path: {chromium_path}")
+
+    # Check if browser file exists
+    if os.path.exists(chromium_path):
+        print("[OK] Browser file exists")
+    else:
+        print("[ERROR] Browser file not found")
+
+print("\n[OK] Configuration check completed!")
diff --git a/tests/test_login.py b/tests/test_login.py
new file mode 100644
index 0000000..9b58cca
--- /dev/null
+++ b/tests/test_login.py
@@ -0,0 +1,79 @@
+"""
+Test Yonyou BIP system login functionality
+"""
+
+import sys
+from pathlib import Path
+
+# Add project root to Python path
+PROJECT_ROOT = Path(__file__).resolve().parent.parent
+sys.path.insert(0, str(PROJECT_ROOT))
+
+from playwright.sync_api import sync_playwright
+from utils.auth import login, logout, close_session
+import os
+
+# Load environment variables
+from dotenv import load_dotenv
+load_dotenv(PROJECT_ROOT / ".env")
+
+# Configure browser path
+os.environ["PLAYWRIGHT_BROWSERS_PATH"] = os.getenv("PLAYWRIGHT_BROWSERS_PATH")
+
+print("=" * 60)
+print("Testing Yonyou BIP Login and Logout")
+print("=" * 60)
+
+# Display configuration information
+print(f"\nConfiguration:")
+print(f"  URL: {os.getenv('ERP_URL')}")
+print(f"  Username: {os.getenv('ERP_USERNAME')}")
+print(f"  Headless: {os.getenv('ERP_HEADLESS')}")
+print(f"  Ignore HTTPS Errors: {os.getenv('ERP_IGNORE_HTTPS_ERRORS')}")
+
+try:
+    with sync_playwright() as p:
+        print("\n[1/5] Starting browser...")
+        browser, context, page, main_frame = login(
+            playwright=p,
+            verbose=True
+        )
+
+        print("\n[2/5] Login successful!")
+
+        # Wait a moment to observe the page after login
+        print("\n[3/5] Waiting 3 seconds to observe the page after login...")
+        import time
+        time.sleep(3)
+
+        # Test logout
+        print("\n[4/5] Testing logout...")
+        logout(main_frame, verbose=True)
+
+        print("\n[5/5] Logout successful!")
+
+        # Wait a moment to observe the page after logout
+        print("\nWaiting 2 seconds to observe the page after logout...")
+        time.sleep(2)
+
+        print("\n[SUCCESS] Login and logout test completed successfully!")
+
+        # Check if auto-close browser
+        auto_close = os.getenv("ERP_AUTO_CLOSE_BROWSER", "true").lower() in ("true", "1", "yes")
+        if not auto_close:
+            print("\n[INFO] Browser will stay open for 10 seconds for manual observation...")
+            time.sleep(10)
+
+        # Close browser
+        print("\n[CLEANUP] Closing browser session...")
+        close_session(browser, context)
+
+except Exception as e:
+    print(f"\n[ERROR] Login/logout test failed!")
+    print(f"Error: {e}")
+    import traceback
+    traceback.print_exc()
+
+print("\n" + "=" * 60)
+print("Test completed")
+print("=" * 60)
diff --git a/utils/auth.py b/utils/auth.py
new file mode 100644
index 0000000..74a2bba
--- /dev/null
+++ b/utils/auth.py
@@ -0,0 +1,176 @@
+"""
+Authentication module - Responsible for Yonyou BIP system login and logout operations
+"""
+
+import os
+from pathlib import Path
+from playwright.sync_api import Playwright, Browser, BrowserContext, Page, Frame
+
+# Load environment variables
+from dotenv import load_dotenv
+
+# Get project root directory
+BASE_DIR = Path(__file__).resolve().parent.parent
+
+# Load .env file
+env_path = BASE_DIR / ".env"
+load_dotenv(env_path)
+
+# Configure Playwright browser path
+browsers_path = os.getenv("PLAYWRIGHT_BROWSERS_PATH")
+if browsers_path:
+    os.environ["PLAYWRIGHT_BROWSERS_PATH"] = browsers_path
+
+
+def login(
+    playwright: Playwright,
+    username: str = None,
+    password: str = None,
+    url: str = None,
+    headless: bool = None,
+    ignore_https_errors: bool = None,
+    verbose: bool = True,
+) -> tuple[Browser, BrowserContext, Page, Frame]:
+    """
+    Login to Yonyou BIP system
+
+    Args:
+        playwright: Playwright instance
+        username: Username (default read from environment variable ERP_USERNAME)
+        password: Password (default read from environment variable ERP_PASSWORD)
+        url: Login page URL (default read from environment variable ERP_URL)
+        headless: Whether to use headless mode (default read from environment variable ERP_HEADLESS)
+        ignore_https_errors: Whether to ignore HTTPS errors (default read from environment variable ERP_IGNORE_HTTPS_ERRORS)
+        verbose: Whether to print detailed logs
+
+    Returns:
+        tuple: (browser, context, page, main_frame)
+            - browser: Browser instance
+            - context: Browser context
+            - page: Page object
+            - main_frame: Main iframe after login (forwardFrame)
+    """
+    import time
+
+    # Read default configuration from environment variables
+    username = username or os.getenv("ERP_USERNAME")
+    password = password or os.getenv("ERP_PASSWORD")
+
+    # URL handling: read from environment variable or parameter
+    if not url:
+        url = os.getenv("ERP_URL")
+        if url and not url.endswith("login/main/index.html"):
+            url = url.rstrip("/") + "/yonbip/resources/uap/rbac/login/main/index.html"
+
+    if not url:
+        raise ValueError("URL must be provided either as parameter or through ERP_URL environment variable")
+
+    # headless parameter handling
+    if headless is None:
+        headless_str = os.getenv("ERP_HEADLESS", "false").lower()
+        headless = headless_str in ("true", "1", "yes")
+
+    # ignore_https_errors parameter handling
+    if ignore_https_errors is None:
+        ignore_https_errors_str = os.getenv("ERP_IGNORE_HTTPS_ERRORS", "true").lower()
+        ignore_https_errors = ignore_https_errors_str in ("true", "1", "yes")
+
+    # Launch browser
+    browser = playwright.chromium.launch(headless=headless)
+
+    # Create context
+    context = browser.new_context(ignore_https_errors=ignore_https_errors)
+
+    # Create page
+    page = context.new_page()
+
+    # Navigate to login page
+    page.goto(url)
+
+    # Extract main iframe (forwardFrame)
+    main_frame = page.locator("#forwardFrame").content_frame
+
+    # Fill username
+    main_frame.get_by_role("textbox", name="用户名").fill(username)
+
+    # Fill password
+    main_frame.get_by_role("textbox", name="密码").fill(password)
+
+    # Click login button
+    main_frame.get_by_role("button", name="登录").click()
+
+    # Handle force login popup (check if exists)
+    confirm_btn = main_frame.get_by_role("button", name="确定")
+    if confirm_btn.count() > 0:
+        confirm_btn.click()
+        if verbose:
+            print("Force login detected")
+    else:
+        if verbose:
+            print("Normal login")
+
+    return browser, context, page, main_frame
+
+
+def logout(main_frame: Frame, verbose: bool = True) -> None:
+    """
+    Execute account logout
+
+    Args:
+        main_frame: Main iframe object (forwardFrame)
+        verbose: Whether to print detailed logs
+    """
+    import time
+
+    if verbose:
+        print("Clicking account menu button...")
+
+    # Element 1: Account menu button (logo icon)
+    main_frame.get_by_role("img", name="logo").click()
+
+    # Wait for menu to appear
+    time.sleep(1)
+
+    if verbose:
+        print("Clicking logout button...")
+
+    # Element 2: "Logout" button
+    main_frame.get_by_text("退出登录").click()
+
+    # Wait for confirmation dialog to appear
+    time.sleep(1)
+
+    if verbose:
+        print("Waiting for logout confirmation dialog...")
+
+    # Element 3: Logout confirmation dialog (check if appears)
+    try:
+        confirm_text = main_frame.get_by_text("退出确定要退出当前账号吗？")
+        if verbose:
+            print("Found confirmation dialog, clicking confirm button")
+
+        # Element 4: Confirm button
+        main_frame.get_by_role("button", name="确定(Y)").click()
+    except:
+        if verbose:
+            print("Confirmation dialog not found, may have auto-logged out")
+
+    time.sleep(2)  # Wait for logout to complete
+
+
+def close_session(browser: Browser, context: BrowserContext) -> None:
+    """
+    Close browser session
+
+    Args:
+        browser: Browser instance
+        context: Browser context
+    """
+    # Check if auto-close browser is enabled
+    auto_close = os.getenv("ERP_AUTO_CLOSE_BROWSER", "true").lower() in ("true", "1", "yes")
+
+    if auto_close:
+        context.close()
+        browser.close()
+    else:
+        print("Note: Browser not auto-closed (ERP_AUTO_CLOSE_BROWSER=false)")