This research identified a d omi nant entophytic fungus 6-5-1 that was isolated from the wheat in the Kaschin-Beck Disease district of Qinghai province, and explored the effect of its fermentation product on rabbit articular cartilage cells. The strain was identified by morphological observation and ITS sequences analysis. The fermentation products were extracted with 75% ethanol, and then was extracted by petroleum ether, ethyl acetate and diethyl ether, respectively, and used for activating the rabbit car...