To present a more attractive image showing a product before a customer for advertisement, a display control system is provided. This system is supposed to be deployed in different sites of a store, shop or shopping mall. The system includes: a server for storing image data representing a plurality of images corresponding to advertisement contents; a controller connected to the server; and a plurality of displays and cameras arranged near an exhibited product for advertisement. When a person is near the exhibited product, a plurality of cameras capture the person from different angles, captured image data is sent to the controller and processed and analyzed by the controller. Then, the controller infers the person's interest, selects a more suitable image to the person based on the person's interest, and transmits image data to any of the displays so as to change a displayed image according to the person's interest.