▎ 摘　　要

NOVELTY - Lubricating composition comprises metal particles, active organic compound and base lubricating oil, the active organic compound contains a polycarbocycle and a carboxyl group. USE - Lubricating composition used in the lubricating field. ADVANTAGE - The lubricating composition is capable of in-situ forming graphene, has excellent lubricating property, and provides better lubricating property for the lubricating system, combines the friction chemical reaction of the organic compound with the metal catalytic realizing in situ graphene in the friction process to reduce friction wear. DETAILED DESCRIPTION - INDEPENDENT CLAIMS are included for: (1) a method for preparing lubricating composition which comprises: i. mixing the metal particles active organic compound and base lubricating oil under the ultrasonic condition to obtain the lubricating composition capable of in-situ forming graphene; and (2) use of the lubricating composition or the lubricating composition prepared by the preparation method in the lubricating field.