The embodiment of the invention discloses an anti-slagging furnace, which comprises a combustion chamber, a deslagging motor, a furnace chamber and a fuel supply device, wherein an ignition stick is arranged on the bottom surface of the combustion chamber, an air inlet hole is arranged on the bottom surface at the feed end of the combustion chamber, a deslagging roll cage rotating to the direction of a deslagging port of the combustion chamber is arranged on the bottom surface at the deslagging end of the combustion chamber, the deslagging roll cage is a cylindrical structure, an air inlet hole is arranged on the cylinder wall, and an air inlet interlayer communicated with the air inlet hole at the feed end and the air inlet hole on the deslagging roll cage is arranged at the bottom of the combustion chamber; the output end of the deslagging motor is connected with a rotating shaft of the deslagging roll cage; the furnace chamber is arranged at the top of the combustion chamber and communicated with the combustion chamber; and the fuel supply device is communicated with a feed port of the combustion chamber. The anti-slagging furnace provided by the embodiment can solve the slagging problem of the furnace during a combustion process.