It is very difficult to control the construction of long row distance of the cutter suction dredger,which is a severe test to the operation of the excavating equipment and the conveying capacity of the equipment.In view of the characteristics of the long spacing of cutter suction dredger，the difficulties in the construction of long row spacing are analyzed,and the pipeline conveying conditions and actual conveying capacity are comprehensively considered.Taking the maximum mud mass that can be transported by pipeline as the measurement standard,compared with the actual mass transported,the ship control technology is adjusted based on the standard to optimize the construction technology of long row distance.