This machine tool is suitable for honing and polishing cylindrical deep-hole workpieces, such as various hydraulic cylinders, cylinders and other precision pipe fittings. Honing and polishing workpieces with step holes. Its processing aperture accuracy can reach IT8-IT9 level or above, and its surface roughness can reach Ra0.2-0.4μm. It uses local honing to correct the taper, ellipticity and local aperture errors of the workpiece being processed. For some cold drawn steel pipes, strong honing can be performed directly. This machine tool is an ideal equipment with high precision and high efficiency.