Glycine is the simplest amino acid in natural, widely exists in animal body, a key material for one carbon, proteins, peptides, nucleotides, porphyrins and bile salt metabolism. Glycine is not only an inhibitory neurotransmitter in the central nervous system, but also widely involved in the regulation of metabolism, antioxidation and anti-apoptosis intissues. The major objective of this article is to provide an overview of recent findings about the protective effects of glycine on cardiovascular disease caused by myocardial ischemia, hypertension and hyperglycemia.