Disclosed are a wireless LAN communication method and system which allow different service providers to share equipments needed for the system to thereby suppress an investment in equipment and improve the convenience for users. The system and method gather the communication amount and communication time for each of users who have respectively contracted with a plurality of service providers when any of wireless LAN base stations is used by a wireless terminal of that user, and cause that service provider who has contracted with that user who has used that wireless LAN equipment to pay a charge to that service provider who owns the wireless LAN base station in accordance with the gathered communication amount and communication time.