The invention discloses an efficient combustion-supporting incinerator. The efficient combustion-supporting incinerator is composed of an incinerator body, a combustion-supporting machine, an incinerator blast system, an oil station, an oil station and oil tank pipeline, an oil tank and fuel oil machine pipeline, an oil tank and a fuel oil machine. The efficient combustion-supporting incinerator is designed in order to improve heat efficiency, reduce cost, fully and completely combust medical livestock and poultry refuse and enable dust emission to reach the national standard. The medical livestock and poultry refuse enters a double-layer grate hearth, and is rotationally combusted in a primary combustion chamber main hearth, air is supplied to a secondary combustion chamber again through the incinerator blast system for further high-temperature combustion, the stop time of fuel in the hearths is prolonged accordingly, the high-temperature low-oxygen combustion effect is achieved, the fuel is fully and completely combusted, finally, toxic and harmful matter in flue gas is removed through a flue gas purification chamber, and smoke reaches the national emission standard. The beneficial effects of being low in cost, good in environmental protection effect and high in heat efficiency are achieved, and nationally regulated energy saving and environmental protection requirements are met.