In order to reduce power consumption, pipe wear and conveying velocity, a pneumatic conveying system that several dunes are installed in pipeline is proposed in this paper. An experimental study focuses on the effect of installed several dunes in the horizontal pneumatic conveying system in terms of the overall pressure drop and particle flow patterns. It is found that in the lower air velocity range, the pressure drop of the pneumatic conveying with installed several dunes was lower than that of the conventional pneumatic conveying system.