Incinerating device provided with stirring rod, rotary type inner container and double-layer furnace body and incineration method of incinerating device

The invention discloses an incinerating device provided with a stirring rod, a rotary type inner container and a double-layer furnace body and an incineration method of the incinerating device. The incinerating device comprises a double-layer furnace body structure, a rotary driving mechanism, an air blowing mechanism, an exhausting mechanism and a fixing bracket; the double-layer furnace body structure comprises a rotatable horizontal cylindrical housing inner container and a columnar housing of which the section is elliptic; in the double-layer furnace body structure, the inside of the furnace body is divided into three spaces including a slag storage chamber, a combustion chamber and a waste gas chamber; the stirring rod arranged inside the inner container can realize stirring and ventilation functions, so timely isolation of the waste gas and fresh air and timely separation of a to-be-combusted material and waste slag are facilitated; the emission of toxic gases generated due to incomplete combustion is r