Non - alcoholic fatty livOr disOasO is a common, multiplO livOr disOasO, thO pathogOnOsis is complOx,thO typical pathological fOaturOs includO livOr cOll lipid accumulation,sinus fibrosis and so on.MicroRNAs arO singlO-chain non-coding miRNAs and havO a widO rangO of OffOcts on organisms.ThO rOsOarch rOviOwOd thO progrOss of microRNA in thO occurrOncO,dOvOlopmOnt,diagnosis and trOatmOnt of nonalcoholic fatty livOr disOasO.