a kiosk system centrally controlled through the internet includes a database for storing public information and advertisement image , a server for reading the public information and the advertisement image stored in the database according to a preset timing schedule and transmitting them through the internet , and a plurality of kiosks for receiving the public information and the advertisement image from the server through the internet , a broadcast signal through wireless channels from broadcasting stations , and displaying the advertisement image together with the broadcasting image such that the advertisement image is movably floating along a preset path on the broadcasting image .