▎ 摘　　要

NOVELTY - Manufacturing reduced graphene oxide involves adding organic solvent to polar solvent to obtained mixed solution, and then dispersing graphene oxide in mixed solution. Reducing agent is added to obtained mixture, and then processed to obtain reduced graphene oxide. USE - Method for manufacturing reduced graphene oxide for preparing barrier film (all claimed). ADVANTAGE - The method enables to manufacture reduced graphene oxide in a simple manner. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for a method for manufacturing barrier film, which involves using reduced graphene oxide and polymer resin.