The utility model discloses a thermal treatment machine that bainite steel rail aluminothermy connects, the heater is drawn together to this thermal treatment press packed bale, and the heater includes: the body, central authorities' through -hole, central through -hole setting body central authorities and have can with the cross section matched with shape of pending rail, the air flue, the air flue is linked together with the external heating gas source through the air inlet that sets up at the body top, and the air flue sets up at the wide face of this central through -hole in internal edge, and one side of the central through -hole of air flue orientation is provided with a plurality of gas pockets in order to be linked together through a plurality of gas pockets and central through -hole, and the water course, the water course is linked together through water inlet and outside water source, and passes through the circulating water in the delivery port discharge water course, and the water course surrounds the air flue setting so that the heater keeps at the normal atmospheric temperature state in the body. This thermal treatment machine has effectively improved machine life through the scheme that reduces the complete machine temperature to accomplish accurate centering operation and swing operation, make to the thermal treatment of rail welding seam even more effectively.