Abstract: The analysis focuses on the common and respective working conditions and the profile of the three forming rolls during the forming process of the spiral weld pipe and under the precondition that there is no relative slipping between the said three rolls and the pipe surface, and the rolls are turning in a theoretical state. The analysis is aimed at finding out the best roll profile so as to reduce the rolling-caused quality defects of the pipe like roll mark, improve pipe quality and increase service life of the roll. In addition, proposals are put forward for current problems concerning the operation.