Regarding the problems such as extrusion damage of prefabricated blocks and low construction efficiency in the soft mattress for bank revetment of J002-1 section of the Yangtze River to Huaihe River diversion project，we optimize the original design scheme of soft mattress structure for bank revetment and construction method.We adopt the soft mattress structure of C25 concrete prefabricated blocks interlock sheet and the construction method of geotextiles-laying boat by referring to engineering examples and scheme comparison and selection.The results show that the optimized construction scheme is technically feasible，the prefabricated blocks have the advantages of less damaged and high construction efficiency，and the expected effect is achieved.The successful application of soft mattress structure optimization and geotextiles-laying boat construction method in the Yangtze River to Huaihe River diversion project provides a good demonstration for similar projects and has good popularization and application value.