Objective To summarize the biology function advances on research of soybean isoflavone, providing science basis for its clinical application.Methods Consult, analyze, summarize related domestic and international literature in recent years.Results Soybean isoflavone is a kind of important biology activity substance and have functions on sub-estrogen, anti-tumour, preventing osteoporosis, adjusting blood lipoprotein,reducing blood cholesterin, preventing and treating atherosclerosis in human body.Conclusion S...