▎ 摘　　要

NOVELTY - A main surface oxide graphene composite film comprises solid phase carrier layer made of inorganic carrier. The solid phase carrier is provided with at least one main surface modified by modifier. The modifier is combined with graphene oxide, and contains amino, quinonyl and/or hydroxyl groups. USE - Main surface oxide graphene composite film used for seawater desalination (claimed). ADVANTAGE - The composite film is uniform and compact, and has high stability and seawater desalination rate. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for preparation of main surface oxide graphene composite film comprising providing solid phase carrier, performing functionalized modification on main surface, covalently binding by modifier and depositing graphene oxide particles.