The word “natto” originated from Japan, which was known as stinky bean, salt bean or silk in Chinese folk. Natto contains multiple functional components, including nattokinase, soybean isoflavone, ?-polyglutamic acid, vitamin K2, biogenic amines, SOD, small-molecule polypeptide, has good preventive and curative effects for many diseases, such cardiovascular cerebrovascular hyperlipidemia, hyper...