To provide chaff exclusive combustion equipment constituted as combustion equipment for using chaff as exclusive combustion fuel, and capable of stable combustion by always supplying fuel in combustion to a combustion part, by always continuously making the chaff flow down in a thin layer shape, uniformly performing combustion ventilation to the chaff toward the outside from the inside of a chaff layer, and quickly removing the combustion-finished chaff from the combustion part.

A chaff flowing-down layer of a doughnut shape in a plan view is constituted as a fuel supply passage, a combustion gas generating area, a combustion area and a combustion ash removing area from its upper part. Combustion air supplied from a doughnut-shaped inside space on the upper end of the chaff flowing-down layer, is ventilated toward the outside from its inside in the combustion gas generating area and the combustion area, and toward a bottom part from the inside in the combustion ash removing area, and the chaff is burnt. Combustion ash is continuously discharged from the combustion ash removing area by rotation of an ash diffusing blade provided in the combustion ash removing area, and the chaff is promptly supplied to the chaff flowing-down layer, and is continuously burnt.