The invention belongs to the technical field of building appliances, and particularly relates to a drying device with a deburring function for a building material. In allusion to problems that a drying process is long so that other working procedures, such as burring to a plate, cannot be performed, and a production rate is low, the following scheme is provided now. The drying device comprises a support frame and a plate body. The top end of the support frame is fixedly provided with a workbench through a bolt, and the upper surface and the lower surface at two sides of the workbench are provided with rectangular sliding chutes. A sliding frame is slidably connected in the rectangular sliding chutes at two sides of the workbench. The middle of the support frame is reserved with a bearing plate, and between the upper surface, adjacent to two sides, of the bearing plate and the lower surface of the workbench, four mutually parallel groove-shaped sliding rails with opposite openings are welded. The drying device is capable of stably fixing the building material to be processed on four clamping plates, conveniently performing deburring on the surface of the plate by machines, such as adeburring machine, at the top end, and performing the deburring on the other surface of the plate through rotating the plate.