Chenpi has the effects of strengthening the spleen and regulating qi, resolving phlegm and drying dampness. Chenpi is the dried rind of tangerine and its varieties in the family of Rutaceae after ripening. It is warm in nature and bitter in taste, and can be used to treat chest paralysis (chest pain), shortness of breath, epigastric (abdominal) distension, food stagnation (food indigestion and accumulation in the stomach), food stagnation, vomiting and diarrhea, cough and phlegm, vomiting and hiccups, etc. It is also used in the treatment of the symptoms of diarrhea. Pericarp is usually taken by decoction, the product is pungent, bitter and dry, can help heat, Yin deficiency and dry cough should not be taken. The adverse effects of Chen Pi have not been clarified. It is recommended to go to the hospital as soon as possible, and the use of pericarp should be guided by a professional Chinese medicine practitioner, and should not be used without authorization, so as to avoid delaying the condition.