▎ 摘　　要

NOVELTY - Preparing graphene involves subjecting to intercalation treatment of flake graphite, microwave pretreating, mechanical refining, second intercalation treating, second microwave pretreating, second mechanical refining, high-frequency ultrasonically oxidizing, and microwave low temperature reducing. USE - Method for preparing graphene. ADVANTAGE - The method enables to prepare graphene in cost-effective and eco-friendly manner, is suitable for industrial large scale production, and has good dispersion effect.