The invention relates to new type numerically controlled machine tool magnetic suspension feeding system. It includes engine base, two guide rails, linear motor stator part, four pairs of differential action suspension electromagnets, two pairs guide electromagnets, linear motor mover part, optical grating measuring system, and support device. The control system of the invention adopts clearance control system between DSP main controller suspension electromagnet, guide electromagnet, and the guide rail, and linear motor servo control system. Thus the invention can eliminate platen no touch support and guide, remove frictional wear, increase feed speed and positioning accuracy, supply enough bearing capacity and thrust, can be used in practical processing.