CONTINUOUS HEATING REACTOR FOR COMPOSTING A continuous heating reactor for composting includes a rotary reactor (4) including a cylindrical reactor housing (41) 5 and push plates (42) arranged inside the cylindrical reactor housing (41) and spaced along the length and inner diameter thereof, a transmission mechanism (2) adapted for rotating the cylindrical reactor housing (41) at a predetermined speed to cause the push plates (42) to push and stir the feeding waste 10 organic material, and a heater (3) for heating the feeding waste organic material in the cylindrical reactor housing (41) by means of the circulation of a hot oil.