Betel nut, as a kind of herbal medicine, has the effect of eliminating accumulation, intercepting malaria, killing worms, inducing diuresis, and moving qi. There is no gender difference in the effects. Betel nut is used as a medicine by drying the mature seeds of betel nut. Betel nut is pungent, bitter, warm and enters the stomach and large intestine meridians. It has the efficacy of eliminating stagnation, intercepting malaria, killing worms, inducing diuresis and promoting the flow of Qi, and can be used clinically for the treatment of malaria, gingerbread worms, abdominal pain of worms accumulation, ascariasis, internal urgency (discomfort in the lower abdomen, wanting to defecate very much, and feeling of incomplete defecation after defecation), accumulation of stagnation, diarrhea and dysentery, and oedema and foot pain. Adverse effects of this product are not clear, this product has a diarrhea effect, and easy to consume the gas, qi deficiency subsidence and spleen deficiency loose stools (feces thin not shaped) should not be used betel nut. The use of betel nut is subject to medical advice.