Since HM B 1996 entered the nutrition market, it has aroused great interest from many medical and nutrition experts. Nowadays, HM B has become a favorite sports nutritional supplement for athletes and bodybuilders together with creatine and whey protein. HM B has a significant effect on increasing muscle and burning fat. Many athletes in the United States have used HMB and achieved good results. Among them are bodybuilding champions B ill Davey and Dan Gw antney, and Shannon Sharpe, one of the strongest athletes in the National Professional Football League (N FL). The most sensational news is that "1996 swimmers who won gold medals in Atlanta Olympic Games benefited a lot from supplementing HMB in training." At present, HM B is little known in China. This paper will summarize the research on HM B and sports ability abroad, hoping that domestic coaches, athletes and bodybuilders can have a perceptual understanding of HMB, so as to correctly face HMB products in the international market.