Bupleurum is a kind of perennial herb of Umbelliferae, also known as Dixian, fenugreek, mountain vegetables, Rucao, Chacao. It is a kind of traditional Chinese medicine for clearing heat, which is used for cold and fever, cold and heat exchange, malaria, liver stagnation and qi stagnation, sternocostal pain, rectal prolapse, uterine shedding, irregular menstruation, etc.