Abstract: The detaching distance is an important parameter for adjusting comber noil and combing quality.Since the rocking of the nipper shaft causes the nippers to move backward and forward through a series of links,the original position of nipper frame is altered when changing the detaching distance,resulting in the change of other process parameters of the comber.The paper elucidates the low of opening-closing of nipper,the timing of cylinder′s combing,the timing of detaching-lapping and the changing law of nip pressure,as calculated and analyzed by computer,in different detaching distance on E7/6 comber.