▎ 摘　　要

NOVELTY - The method involves pre-treating nanofiltration base film, preparing an aminated graphene into aqueous solution, and ultrasonically processing to obtain aminated graphene solution. The piperazine into piperazine solution is prepared and then mixing with aminated graphene solution and triethylamine, and prepared into aqueous phase solution. The prepared acid solution is added into the aqueous phase solution, and adjusted the pH value of the aqueous phase solution, the trimesoyl chloride and normal hexane solvent, and prepared into organic phase solution. The pre-treated nanofiltration base film is palced into aqueous phase solution, taken out and dryed and then placing into the organic phase solution for interface polymerization, and taken out and drying again to obtain the nanofiltration membrane-high permeability and high selectivity. USE - Preparation method of nanofiltration membrane with high permeability and high selectivity. ADVANTAGE - The method enables preparing the nanofiltration membrane with high water permeability and high selectivity.