Peas are annual climbing herbs of the genus Peas of the legume family, also known as Dutch beans, snow beans, Uygher beans, ear beans, etc. Peas and their seedlings, flowers and pods are all used in medicine. Pea seeds have the effects of neutralizing middle and lower qi, detoxifying, diuresis, lactating and so on, and mainly treat thirst quenching, foot gas, edema, scabies and other symptoms. Pea pods can detoxify and abstain sores, and pea flowers and pea seedlings have the effect of clearing heat and cooling blood. Peas are rich in thiamine, riboflavin and a variety of inorganic salts such as calcium, iron, zinc and phosphorus. They are excellent concentrate feed for livestock and are widely used as protein supplement feed for pigs, chickens, quails, etc. Fresh stems and leaves of peas can be fed, silied and dried into hay or hay powder, and they are also the feed for all kinds of livestock. The stems and leaves of peas can be used as green fertilizer or fuel. In addition, peas, as a precursor to cereal crops in rotation, can improve the yield and protein content of cereal crops, and improve the quality of their seeds. Planting peas can promote the accumulation of nitrogen in the soil and improve the physical properties of the soil. It is a good stubble in rotation.