Pea (scientific name: Pisum sativum) is an annual or biennial climbing herbaceous plant in the legume family, and it is an important food and vegetable. It is also known by various names such as hu bean, wheat bean, cold bean, small cold bean, Huai bean, ma dou, green small bean, green speckled bean, liu bean, golden bean, Hui bean, wheat pea, snow pea, bi bean, ma lei, guo bean, and horse bean.