Bao-Shen (Baotou-Shenmu),Shen-Shuo (Shenmu Shuozhou) and Shuo-Huang (Shenchi-Huanghua) Railways are inseparable parts to undertake coal transportation from western China to the eastern region,undertaking the transportation of Shenhua coal from western coalfield to eastern port.At present,the transport capacity is approaching saturation point,which restrains the long-term development goals.Implementation of heavy-haul transportation and its traffic organization modes is the subject that three companies under Shenhua Railway transport system should urgently talk over.Through analyzing the current situation of equipment and transport modes of Shenhua Railway transport system,this paper proposes the concrete solution to the rational optimization of capacity expansion and traffic organization with the overall consideration of tapping potentials and expanding capacity in railway sector.