Wang Bu Liuxing, Chinese medicine name. For the Dianthus family plant Vaccaria segetalis ( Neck.) Garcke dry mature seeds. Summer fruit into hot, the peel has not yet cracked when harvesting and cutting plants, sun-drying, hit the seeds, remove impurities, and then sun-drying. In addition to South China, all regions of the country are distributed. It has the efficacy of promoting blood circulation and menstruation, lowering breast milk and swelling, diuretic and diuretic. It is used for menstrual dysmenorrhea, dysmenorrhea, lactation, breast carbuncle swelling and pain, gonorrhea astringent pain.