The invention relates to a multi-specification chain thermal treatment machine. The multi-specification chain thermal treatment machine comprises a rack and a transmission frame. A motor, a speed redactor, a reversing mechanism, a transmission mechanism, a starting point transmission wheel device, a transferring transmission wheel device, an upper guiding wheel and an end point transmission wheel device are arranged on the transmission frame in sequence. The starting point transmission wheel device, the transferring transmission wheel device and the end point transmission wheel device each comprises a drive shaft, a drive wheel, a friction wheel, a driven shaft, a thrust ball bearing, a belleville spring, a lead screw and a handle. The drive wheels and the friction wheels are relatively installed obliquely. The friction wheels are provided with abrasion resisting rings, and the thrust ball bearings are arranged on the wheel end faces. The belleville springs, the lead screws and the handles are sequentially arranged behind the thrust ball bearings. The multi-specification chain thermal treatment machine can carry out thermal treatment on chains of different specifications.