Method for providing EPG (Electronic Program Guide), server and WiFi (Wireless Fidelity) service system

The invention relates to a method for providing an EPG (Electronic Program Guide), comprising the following steps: receiving a request for acquiring EPG information by an EPG server from a client side, and judging whether the client side passes service authentication by the EPG server; and if the service authentication is not passed, carrying out unicast on a first EPG message containing completeinformation of channels needing to pay access cost as well as list and charging information of channels needing to pay service cost to the client side by interactive channels, or else, carrying out unicast on a second EPG message containing complete information of channels needing to pay access cost and service cost to the client side by interactive channels. The invention also relates to an EPG server and a WiFi (Wireless Fidelity) service system. In the invention, control on the received information of charged channels is finished by issuing the EPG messages through different modes, so thatnot only can service prote