Xuefu Zhuyu Pill has the effects of promoting blood circulation, removing blood stasis, promoting qi circulation and relieving pain. Indications: thoracic obstruction. Among them are safflower, angelica, Ligusticum chuanxiong, red peony root, peach kernel, Achyranthes bidentata and so on. Usually, this medicine is not allowed during menstruation. (Because its prescription contains a large number of drugs for promoting blood circulation and removing blood stasis, it will lead to menorrhagia or prolonged menstrual period when applied during menstrual period. But if it belongs to blood stasis dysmenorrhea, you can use this medicine. It would be better if it was a decoction. There are some unnecessary drugs for treating blood stasis dysmenorrhea in the prescription, and drugs such as Rhizoma Corydalis, Rhizoma Cyperi and Herba Leonuri for promoting blood circulation, regulating menstruation and relieving pain can be abandoned. Therefore, Xuefu Zhuyu decoction is not absolutely impossible to use, and it should be analyzed in detail.