Jatropha is a kind of peppercorns, its dried ripe fruit skin can be used in medicine to kill insects and relieve itching, warm the middle to relieve pain (by warming the spleen and stomach to relieve pain), commonly used in the treatment of cold and damp vomiting and diarrhea, worms and abdominal pain, eczema and itchy, abdominal pain in the middle of the cold, itchy yin, and so on. Pepper is often used as a kitchen condiment, and when the dried ripe rind of the pepper is used in medicine, it is the Chinese medicine pepper. Pepper can kill insect itching, warming pain, often used internally for cold and wet vomiting and diarrhea, insect accumulation of abdominal pain, cold abdominal pain and other conditions, can also be decocted and used externally for the treatment of eczema, itching, women’s vaginal itching and other conditions. The adverse reactions and contraindications of this drug are not clear. If there is physical discomfort should be timely medical treatment, not self-medication, so as not to delay the condition.