The utility model discloses a pneumatic means for pipeline threading is particularly useful for wearing the feelings type of fine rule in long pipeline, the device includes observation window on shell, the shell, fixes the air compressor of the sealed bearing on the shell, the pivot of crossing the shell and handle, the epaxial spool of commentaries on classics and shell bottom and treat threading pipeline interface, during the threading, pipeline and the air compressor machine of treating the threading with correspond interface sealing connection, the epaxial linear system of line is on the piston, the piston is placed in the pipeline, provide the high pressure draught through the air compressor machine, promote the pipe in piston motion deviate from from the other end until the piston, accomplish the threading.