Abstract: This invention is an apparatus for drying and burning high-hydrous combustible solids comprising: a hopper for containing high-hydrous combustible solids; a drier for drying said high-hydrous combustible solids when transported from said hopper to said drier 1; a combustion chamber for receiving and burning dried solid from a transportation tube; and a means to lead the waste gas from said combustion chamber to said drier to be used as drying gas. High-hydrous combustible solids are transported to furnace the combustion chamber immediately after being dried in the drier, and the waste gas from the combustion chamber is used as drying gas in the drier.