The invention relates to the technical field of numerical control machine tools, and discloses a damping base of a numerical control machine tool. The damping base includes a base body, the bottom ofthe interior of the base body is fixedly connected with a telescopic sleeve, the surface of the telescopic sleeve is in sleeved connection with a first fixed plate and a second fixed plate through connecting sleeves, buffer springs are fixedly connected between the first fixed plate and the second fixed plate, the interiors of the buffer springs are fixedly connected with support bases positionedon the upper surfaces of the first fixed plate and the second fixed plate, the number of the buffer spring is two, and positioning rods positioned on the first fixed plate and the second fixed plate are arranged between the two buffer springs. According to the damping base of the numerical control machine tool, by arranging and using an air spring device, a damping area is added, when the base body is shaken, through use of the air spring device, buffering force produced by shaking can be greatly reduced, so that the damping base is used by a user more conveniently, and the use efficiency of the damping base of the numerical control machine tool is ensured.