Oxygen control type household garbage pyrolysis treatment device

The oxygen control type household garbage pyrolysis treatment device comprises a pyrolysis gasification furnace and a secondary combustion chamber which are connected through a smoke pipe, the interior of the pyrolysis gasification furnace is sequentially divided into a drying layer, a dry distillation layer, a gasification layer, a combustion layer and a burnout layer from top to bottom, and a smoke suction opening is formed in the position between the dry distillation layer and the gasification layer; the top and the bottom of the pyrolysis gasification furnace are respectively provided with a household garbage feeding hole, a deslagging mechanism and a gasification agent gas inlet; the pyrolysis gasification furnace is also provided with a catalyst switching device which is used for feeding water vapor of the drying layer and/or part of smoke at the smoke outlet into the combustion (carbon) layer as a catalyst; a gasifying agent fed into the gasifying agent gas inlet is air pressed by a high-pressure air f