The invention provides an overturning device. The overturning device comprises a first conveyor belt and a second conveyor belt which are distributed in parallel and are both used for conveying a plurality of bodies to be overturned. In the direction that the first conveyor belt forwards conveys the multiple bodies to be overturned, a baffle is arranged in front of the first conveyor belt; and when the multiple bodies to be overturned are forwards conveyed by the first conveyor belt and make contact with the baffle, the baffle enables the multiple bodies to be overturned to bend towards the second conveyor belt, the multiple bodies to be overturned are conveyed to the second conveyor belt, and the conveying direction of the second conveyor belt is opposite to the conveying direction of thefirst conveyor belt. By means of the overturning device, the multiple bodies to be overturned can be overturned by 180 degrees at a time, the distribution manner of the multiple overturned bodies isconsistent with the distribution manner of the multiple bodies to be overturned before overturning, and therefore the requirements of production occasions or other occasions are met, such as the quality testing of the front faces and back faces of the overturned bodies in the last of the production link of the bodies to be overturned.