▎ 摘　　要

NOVELTY - The membrane has a nano-filtration membrane body deposited in a separating layer through a vacuum filter process. A pump is provided with a porous supporting film. The separating layer is assembled with a cyclodextrin layer through a graphene layer. USE - High repellency graphene-cyclodextrin composite nano-filtration membrane. ADVANTAGE - The membrane has better tightness effect of cyclodextrin layer with a graphene sheet, better rejection of a nano-filtration membrane anti-pollution performance, large water flux, high desalting rate, better anti-pollution performance, simple and easy preparation processes, strong controllability, low production cost and high nano-filter application prospect. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for a high repellency graphene-cyclodextrin composite nano-filtration membrane preparation method.