Gypsum board drying system

The invention belongs to the technical field of gypsum board processing equipment, and provides a gypsum board drying system. The gypsum board drying system comprises a drying chamber and two sealing devices; a plurality of layers of conveying roller ways are arranged in the drying chamber; and the two sealing devices are arranged at a feeding port and a discharging port of the drying chamber respectively. Each sealing device comprises heat preservation boards, driving devices and a locking device, wherein the heat preservation boards each have two working positions, when the heat preservation boards are located at the first working positions, the heat preservation boards close the feeding ends or the discharging ends of the conveying roller ways of the corresponding layers, and when the heat preservation boards are located at the second working positions, the heat preservation boards open the feeding ends or the discharging ends of the conveying roller ways of the corresponding layers; the two driving device