Under normal circumstances, women should not take mastication during menstruation. Mastication is mainly used in clinical practice for diseases such as breast enlargement caused by Qi stagnation and blood stasis, and has the function of activating blood circulation and removing blood stasis, while women taking drugs to activate blood circulation and remove blood stasis during menstruation will lead to an increase in menstrual flow, and may also lead to symptoms of continuous menstruation. It can be taken three days after the menstruation is completely clean. In addition to mastication, other drugs with blood-activating effects, such as Yunnan Baiyao capsules and motherwort cream, are not recommended for women during menstruation.