The invention relates to a chestnut shell processing device. The chestnut shell processing device is characterized by comprising a step-shaped pavement, wherein a ship-shaped cooking groove is dug in the high-level pavement part of the step-shaped pavement; the low-level pavement part is provided with a centrifugal drying and smashing device; the centrifugal drying and smashing device comprises a groove frame; a rotating drum coaxial with the groove frame is arranged in the groove frame; multiple water outlet holes are formed in the two side walls of the rotating drum; the bottom of the rotating drum is in drive connection with an output shaft of a first motor fixedly connected to a frame; a rail is connected with a cylinder having a downward piston rod; the piston rod of the cylinder is fixedly connected with a motor base; the motor base is fixedly connected with a second motor having a downward output shaft; the output shaft of the second motor is fixedly connected with a grinding disc having grinding cracks on the surface; and the rail is provided with a negative-pressure guide pipe controlled by a pipe valve. The chestnut shell processing device is simple in structure, has the relevance between equipment and equipment, and can realize the flow processing of chestnut shells.