To provide a garbage disposer in which an air passage case for hot-air circulation provided with a blowing means is molded with a resin having excellent heat-resistance to thereby reduce the time and component cost required for working and assembling and the circulation air passing from the joint part of case components of the air passage case for hot-air circulation into the air passage case for hot-air circulation is prevented from leaking to the surroundings.

The air passage case 12 for hot-air circulation made of the heat-resistant resin fabricated by assembling two or more case components 12f, 12g and sealing the joint part 12h between the case components 12f, 12g via a metal wire by heat welding is disposed on the outer side surface of an outside fixed container 3. A blowing means 15 blowing hot air into a garbage storing container 4 is disposed inside the air passage case 12 for hot-air circulation.