Scrapy provides various ways to handle cookies and session management. By default, Scrapy automatically handles cookies, saving cookies returned by the server in memory and automatically sending them in subsequent requests. Developers can enable or disable cookies functionality through the COOKIES_ENABLED configuration item. For scenarios that require login, FormRequest can be used to send login requests, and Scrapy will automatically save the cookies after login. Developers can also manage multiple independent sessions through CookieJar, with each CookieJar maintaining its own set of cookies. In middleware, request cookies can be accessed and modified through request.cookies, and response cookies can be accessed through response.cookies. For scenarios that require persistent cookies, cookies can be saved to files or databases and reloaded during the next crawl. It's important to note that cookie management may affect spider performance and privacy, and should be used reasonably based on actual needs.