The invention discloses a command control system including a light emitting unit, an image capturing unit, a storage unit, and a processing unit. The processing unit is coupled with the image capture unit and the storage unit. The light emitting unit emits light to form an illumination area. The image capture unit captures a plurality of pieces of image information in the illumination area. The storage unit stores different commands corresponding to the image information. The processing unit performs functions according to the commands corresponding to the image information.