Abstract: This invention is called a Mobile Advertising System. It is designed to move the billboards and shelves on which goods are advertised. The present invention is compromised of: a rail of a specific length; a moving element which moves the billboard and the shelf on which goods are advertised; a sensor which detects the movement of the people walking by; and a control unit which controls the servo motor of the said moving element so that the billboard or the shelf may move according to the output signal of the said sensor in the same direction and at the same speed of the pedestrians.