The present invention discloses an interactive information propagation system for elevator. It consists of control computer, server, network access equipment, concentrator, wireless access point equipment and terminal computer with wireless network interface, in which the control computer and server can be accessed into internet by means of Internet interface, the network access equipment, concentrator and wireless access point equipment are connected together, the network access equipment can be connected into Internet, and the wireless access point equipment can be mounted in every buildinghaving need of said system, and the terminal computer with wireless network interface can be mounted in every elevator car of building using said system, and its display screen can be mounted on the inner wall of elevator car. Said display screen can display various information of the media.