The utility model discloses a pipe fitting inner wall wiping arrangement, include connecting rod - guide rail mechanism, chucking slider, electro -magnet, guide rail and clean the piece, connecting rod - guide rail mechanism is connected, passes through motor drive with the frame, terminal and the chucking slider of connecting rod - guide rail mechanism articulate, electro -magnet and chucking slider fixed connection, and the guide rail is fixed in the frame, and the chucking slider is arranged in the guide rail, under motor drive, connecting rod - guide rail mechanism drive chucking slider, reciprocating motion is along with the chucking slider along the guide rail to the electro -magnet, cleaning block interior cladding magnet, placing in tubular, produce magnetic force after the electro -magnet circular telegram and make that to clean the piece attached on tubular inner wall, electromagnetism band iron moves and cleans the piece and along tubular inner wall contour orientation reciprocating motion, can follow its axial motion for tubular. The utility model discloses simple structure is reliable, can not only clean toper pipe fitting and fusiformis pipe fitting, is applicable to the tubular piece of different bores in addition, has improved product quality and has saved the cost of labor.