Peppercorns boiled in water and soaked in feet have the effect of killing insects and relieving itching, and can be used to treat eczema and so on. Pepper is the dried mature fruit rind of green pepper or peppercorns, which is a kind of Chinese herbal medicine with a pungent and warm flavor. The medicine has the effect of warming the middle and relieving pain (relieving pain by warming the spleen and stomach), killing insects and relieving itching. It can be used internally by decoction or externally by fumigation with appropriate amount of decoction. Pepper is used externally to kill insects and relieve itching, and is used to treat eczema and vulvar itching. Pepper has the effect of warming the center and relieving pain (relieving pain by warming the spleen and stomach). It is used for vomiting and diarrhea, cold pain in the epigastrium (feeling cold pain in the stomach and abdomen), and abdominal pain due to accumulation of worms. Adverse effects of peppercorns are not known. Pepper is contraindicated in people with yin deficiency and fire (deficiency of yin essence in the body and hyperactive deficiency fire), people with heat in the lungs and stomach, and pregnant women should be cautious in taking this product. Drugs should be used under the guidance of a doctor to identify the evidence.