Soybean isoflavone(SI)is a kind of secondary metabolites during the growth of soybeans, mainly contained in the cotyledon and hypocotyl of soybean seeds, is regarded as one of the crude drugs. SI has many biological activities, many studies have investigated the effect of the antibacterial activities, the antibacterial mechanisms were reported less. The antibacterial mechanisms of SI were researched, for the development of high-performance and low toxicity of antibacterial drugs provide a theoretica...