The invention aims to provide a system which can identify a noncontact operation to a conveying device no matter the number of passengers in the conveying device such as an elevator, thereby controlling the conveying device. The conveying device control system allows inputting of a plurality of persons in a preset area on an operating panel and furthermore controls the conveying device according to an output signal from the operating panel. The conveying device control system is provided with the components of a photographing device which can overlook and photograph a preset area; an image processing device which processes an image that is output from the photographing device; and a control device which controls the conveying device according to an image processing result of the image processing device. The image processing device identifies a hand lifting behavior of at least one person of a plurality of persons in the preset area, namely an objective person. Furthermore, even when the objective person does not operate the operating panel, the control device can control the conveying device according to the hand lifting behavior.