The invention provides a radiant tube type rotary heating device for organic solid waste pyrolysis. The device comprises a feeding end 1, a rotary drum 2, a discharging end 3, a tensioning device 11, a feeding end seal 12, a heat-resistant steel wire rope 13, a feeding end moving device 14, a feeding end rolling belt 21, a drum gear belt 22, a discharging end rolling belt 23, a feeding end bearing 24, a rotation power device 25, a discharging end bearing 26, a discharging end seal 27, an air outlet 31, a burner nozzle 32, a discharging end moving device 33 and a radiant tube 34. According to the device, the structure is simple, operation is convenient, and the investment cost and the operation and maintenance cost are reduced to a great extent; meanwhile, a rotary furnace is applied to organic solid waste pyrolysis, therefore, solid waste can be heated uniformly, full pyrolysis can be guaranteed, and the pyrolysis efficiency can be improved; a radiant tube burner is directly arranged in a rotary furnace drum, radiant energy is directly transmitted to the heated organic solid waste and the inner wall of the rotary furnace drum, and then the heat transfer efficiency is greatly improved.