As port construction，waterway maintenance，island reclamation and other projects continue to move towards the direction of longer blowing distance，harder bottom，larger digging depth and other complex conditions，higher requirements are put forward for dredging equipment selection，technical scheme design and construction organization.Regarding the complex site conditions of Dongying Port approach channel，poor sea conditions，scattered dredging area，long transport distance of dredged soil，difficult cost control and other problems，the comparison and selection of dredging equipment，pipeline redundancy design，transportation capacity calculation and construction combination optimization are carried out for the construction scheme of ultra-long distance multi-point dredging. A set of special combined construction scheme of extra-long distance multi-point dredging for cutter suction vessel is designed，which is technically feasible，safe，environmentally friendly，convenient and economical，and can provide reference for similar dredging and filling projects.