An information providing terminal 3 notifies a mobile information terminal 1 of an item and a ciphered information body when a circuit between the mobile information terminal 1 and the information providing terminal 3 is not busy. The mobile information terminal 1 displays only the items to a user and, when the user selects one of them which is necessary, requests the information providing terminal 3 to send a deciphering key for the selected information. The information providing terminal 3 charges for the information notified to the mobile information terminal 1 by utilizing the request of the deciphering key from the mobile information terminal 1. Thus, it is provided an information providing system capable of charging on the basis of an amount of pure data of the notified information, with reduction of a waiting time up to a time at which the user reads the information and a load of a network.