A microwave burning furnace including a housing constituted by a metal on which a microwave is to be irradiated, a metallic door provided in the housing, a burning chamber provided in the housing and surrounded by a material having a low microwave absorption characteristic and a high heat insulating property, and microwave generating means, wherein the burning chamber includes a heater element constituted by at least two types of heating materials having a heating material for a high temperature region which automatically generates a heat mainly in the high temperature region to have a burning temperature by an irradiation of a microwave and a heating material for a low temperature region which automatically generates a heat mainly in the low temperature region including an ordinary temperature.