To provide a garbage treating machine capable of certainly treating even garbage having adhesiveness by microorganisms by neither forming lumps nor generating malodor.

After garbage and microorganisms are charged into a cylindrical drum 3, the drum 3 is vertically rotated while the temperature inside the drum 3 is maintained at about 65C by a heating means 5. At that time, air is charged and discharged to and from the drum 3 by an air charge and discharge means 6, 7. While a plurality of braking blades 14 are attached to the inner wall of the drum 3 in parallel to a drum axis direction, an overhang arm 20 overhanging downwards is fixed between an air feed pipe 8 unified with a fixed hollow shaft 2 and an air discharge pipe 9, so that a predetermined clearance may be obtained between the overhang arm 20 and the breaking blades 14 by rotation of the drum 3 to get garbage present among them finely crushed.