Pepper, also known as pepper, sea pepper, pepper, pepper, pepper and so on. It is a capsicum plant of Solanaceae. Pepper is an annual or perennial herb. Fruit is usually conical or rectangular, green when immature, bright red, yellow or purple when mature, with red being the most common. The causal skin of pepper contains capsaicin, which is spicy. Can stimulate appetite. The content of vitamin C in pepper ranks first among vegetables, which originated in Mexico and was introduced to China in the late Ming Dynasty.