Abstract: A combustible waste incinerator with a tubular furnace defining a cavity with a first opening for receiving said waste and a second opening and an interior and an exterior surface is disclosed. A burner unit is positioned at the second opening of the cavity for producing an intense flame in the cavity sufficient to burn the combustible waste therein. A water pipe and an air pipe are spirally coiled along the interior surface of the cavity for dissipating heat formed and supplying air to the cavity to promote combustion. The water pipe and the air supply pipe are disposed on the interior surface of the cavity such that a spiral channel is formed from the first opening to the second opening of the cavity. A cylindrical wire screen is disposed between the water and air supply pipes and the cavity to permit at least a portion of the waste to pass from the cavity into the spiral channel.