Also known as green soybeans. According to the color of its cotyledons, it can be divided into two types: green-skinned green soybeans and green-skinned yellow soybeans. Beans rich in protein mass, which contains a variety of essential amino acids, especially lysine content is high. Soybean is an annual herbaceous plant in the leguminous family, which is native to my country. It has been cultivated since ancient times in my country, and it has been cultivated for 5000 years. It is now widely planted throughout the country, and it is produced in the northeast, north China, Shaanxi, Sichuan and the lower reaches of the Yangtze River. It is mostly cultivated in the Yangtze River Basin and the southwest, and the quality of Northeast soybeans is the best. Soybeans cultivated in countries all over the world are directly or indirectly spread from my country.