Access method, device and system to user behavior

Embodiments of the present invention provide an access method, a device and a system to a user behavior. According to the embodiments of the invention, by matching the acquired URL request and the database which stores the URL initiated by the use and obtained and identified by using web crawler technology, if the URL conatained in the URL request is matched with corresponding URL user initiated in the database matched, then the URL request is initiated by the user can be determined, enables a network forwarding device or a server fast and accurately to obtain the user-initiated URL request behaviors for further user behavior analysis.