This paper expatiated on advances in research of yak production system based on analysis and summarization of lots of relative papers and data for the last10-odd years.The re-search contents include yak resources situation,physiology and biochemistry,inheritance,cross-breeding,inbreeding,wild yak resources and their utilization,productivity,nutrition and feeding management,product quality,yak diseases and so on.According to advances in the research,the paper identifies the main issues in both research and production of yak which will provide valu-able reference to the understanding of the yak science development and future yak research and production system.