The effects of organic silicate on the friction performance of HT150/45 steel pair are studied by using an improved friction apparatus. Emphases are mainly put on the mechanisms of surface self-repairing，modification and abrasion-resistant rule . The reagent of ART is added to the pair, and then the friction experiment is carried out under constant load, constant velocity in atmospheric environment. Restoration agent is analyzed by using kevex TEM, S440 SEM etc. The abrasion rate of cast iron is tested, meanwhile, by the test of sample surface microcosmic rigidity and the roughness, observation of the microcosmic appearance and the surface elements analysis and the observation of the metallographic phase organization, the results show that there is an ivory-white film on the surface of HT150. Investigation by microscope indicates that many grey blocks are observed on the specimen surface and some elements of ART are embedded into the surface. The micro-penetration hardness and surface roughness are greatly increased，which are four times as large as the original ones in some parts. At the same time, the surface roughness is obviously decreased, some sample's Ra is 14% of the original one, which demonstrates the pronounced abrasion-resistant effects of organic silicate.