The invention relates to the field of bending machines, in particular to a numeric control bending machine with a temperature control protection function of an engine. The numeric control bending machine comprises a base, support rods, first side rotating shaft motors, bending platforms, second side rotating shaft motors, fixed parts, fixed screws, a middle rotating shaft, a telescopic oil cylinder, a bending part, an electromagnetic heating coil, a temperature controller, a central controller and a control key, wherein the support rods are connected to the left and right sides of the upper part of the base respectively through the first side rotating shaft motors, the left and right bending platforms are connected to the top ends of the support rods through the second side rotating shaft motors, the middle parts of the two bending platforms are connected through the middle rotating shaft, and the fixed parts are respectively arranged at four corners of the bending platforms; the fixed screws are arranged on the lower parts of the fixed parts, and the telescopic oil cylinder is arranged just above the middle rotating shaft. The numeric control bending machine is easy to operate, the support rods are matched with the rotating motors, a workpiece can be bent by the telescopic oil cylinder, and the workpiece is heated by the electromagnetic heating coil, so that the bending efficiency is improved; and the workpiece is more stably fixed by the fixed parts, and high practicability is achieved.