Pepper herb, simple leaves alternate, and the stipules are destroyed. The flowers are bisexual, symmetrical in radiation, and the corolla is closed. It belongs to Solanaceae, native to South America, and is now cultivated in large areas of China. Pepper is rich in vitamin C, carotene, protein, sugar, minerals (calcium, phosphorus, iron, selenium, cobalt), pigments (cryptoxanthin, capsanthin, trace capsanthin), solanine, fatty oil, resin, volatile oil and spicy ingredients (capsaicin, dihydrocapsaicin, homocapsaicin, etc.). Pepper is spicy and hot. It has the effects of warming the middle warmer, strengthening the stomach and killing insects, and is mainly used for treating stomach cold, indigestion, rheumatic lumbago, parotitis, multiple furuncles and other diseases. Capsaicin is also a potential anticancer substance and antioxidant.