▎ 摘　　要

NOVELTY - A polyvinylpyrrolidone/graphene oxide nano composite catalytic material preparing method involves dispersing an organic substance in a citric acid to prepare precursor material, optimizing an internal structure of precursor material by introducing a polyvinylpyrrolidone and a graphene oxide, and preparing efficient nano-catalytic materials. USE - Method for preparing polyvinylpyrrolidone/graphene oxide nano composite catalytic material for use in reduction reaction of oxygen. ADVANTAGE - The method enables preparing the nano composite catalytic material with good stability, good electronic transmission performance, high active site density, simple synthesis process, low cost and easy scale production and application.