To provide a method and a system for providing limited information which can restrictively provide area-related information, etc., for users of portable telephone sets having entered an information provision area, in every information provision area wherein an information transmission place such as a store, a company's office, and public facilities is positioned.

An information transmission device 10 is installed at the information transmission place such as a store, a company's office, and public facilities, object information to be provided which consists of at least one of information related to the information transmission place, information regarding articles handled at the information transmission place, information related to advertisement, and area-related information is stored in the information transmission device 10, and the object information to be provided is repeatedly transmitted in one direction from the information transmission device 10 to the information provision area A limited to the periphery of the information transmission place, so that a portable telephone set 20 entering the information provision area A receives the object information.