Abstract: A curve equation and a logical calculation method of the pipe-belt conveyor transition segment and the simulation figure were given according to the existent shaping theory in that the sections of the pipe-belt conveyor transition segment must be a circle. A non-linear numerical arithmetic was adopted. The calculation result of the transition segment can meet the conditions of the belt tension and metamorphose harmony equation. This arithmetic can get more accurate design length than other methods. The calculation result table was given, and the table may help to design the length of the head and the tail of the transition segment.