System for the processing of organic waste and products, which is equipped with, at least, one cylindrical cavity (1) of treatment which is arranged with a loading area (12) and a unloading area (13) of waste and an entrance (14) and exit (15) of vapour. Inside the cylindrical cavity (1), dragging spindle (2) with direction of advance from the loading area to the unloading area is installed. The axis of the dragging spindle is equipped with mixing blades (11) which conform a mixing spindle with a direction of advance opposite to that one of the dragging spindle.