The utility model discloses a carton conveying device, comprising an executing part and a control part, wherein the executing part comprises a drum-type conveying mechanism which is provided with a plurality of bar-shaped stop dogs at equal intervals, a lifting cylinder is connected to the lower parts of the stop dogs, the stop gods are vertical to the conveying direction of the drum-type conveying mechanism, the stop dogs are positioned in the gap of the drum, a proximity switch is installed on the retaining edge of the drum-type conveying mechanism between two adjacent stop dogs, and the proximity switch, the lifting cylinder and the controller are electrically connected. According to the carton conveying device, cartons can be automatically conveyed to a specific position of a packaging production line, degree of automation is high, labor intensity is reduced, and production efficiency is improved.