▎ 摘　　要

NOVELTY - Nano-complex agent, is prepared by (a) placing silver nitrate solution and the sodium phosphate solution with the templating agent on both sides of the biological semipermeable membrane, and adding equal quantity of graphene and uniformly dispersing content and (b) leaving and reacting content for 10 hours, removing biological semipermeable membrane and washing precipitate formed on both sides of the biological semipermeable membrane and drying biological semipermeable membrane. USE - The nano-complex agent is useful for providing antibacterial effect. ADVANTAGE - The nano-complex agent is easy-to-recover, has high chemical stability, and large surface area.