The construction area of environmental dredging engineering in Caohai of Dianchi Lake can be divided into three parts.The construction area is 700,000 square meters,the volume of work is 2.2 million cubic meters,and the transport distance is from 8 km to 15 km.In order to solve the problem of the limitation on the roadway,the long distance transport technology has been analyzed and discussed.On the basis of the practical problem of the construction site,the boost pumping is chosen which is efficient for long distance dredging soil transportation.