The utility model discloses an artificial granite lathe body of a novel numerical control lathe. A lathe main body is made of granite stone, and the entire section is in the form of a right triangle; the inclined plane of the lathe main body is provided with a plurality of continuous concave-convex installing surfaces; and the concave-convex installing surfaces comprise a lathe saddle guide rail installing surface, a Z-shaft feeding system supporting seat installing surface, a main spindle box installing surface and a tailstock embedding guide rail installing surface. In the artificial granite lathe body, an artificial granite technique and the oblique lathe structure of the numerical control lathe are combined, the lathe body saddle guide rail is a linear rolling guide rail, and the tailstock guide rail is an embedded guide rail, so that an artificial granite numerical control horizontal oblique lathe structure is realized; the problem of thermal treatment of a tailstock guide rail is solved, the structure is simple, the cost is low, and maintenance is easy; and the accuracy stability of a machine tool is improved greatly, the dynamic characteristic of processing is improved, the processing accuracy is increased, metal materials and energy can be saved, and casting pollution of a cast iron lathe body is lowered; and the artificial granite lathe body can be applied to an oblique lathe body structure of a precise numerical control horizontal lathe.