The invention discloses a novel detection device based on a car seat cover. A transmission belt is provided with a plurality of grooves, the bottoms of the grooves are made of a transparent material,one side surface of the transmission belt is connected with a connecting rod A, the connecting rod A is connected with a funnel-shaped placement groove, the lower end of the placement groove is abovethe transmission belt, and seat covers fall into the grooves through the placement groove; two opposite side surfaces of the transmission belt are respectively connected with a fixing rod, the fixingrod is connected with a horizontal support rod, a connecting column is connected between the two support rods, the two connecting columns and the two support rods enclose to form a rectangle, the fixing rods and the connecting columns are all connected with a video device, the lower end of the transmission belt is vertically connected with two connecting rods B, a horizontal horizontal rod is connected between the two connecting rods B, the horizontal rod is connected with a horizontal video device, the transmission belt is provided with a blowing device for blowing seat covers in the groovesout, each of the video device and the horizontal video device is connected with a controller, and the controller is used for controlling the blowing device.