Under normal menstruation, it is best not to take herbs that regulate qi and blood deficiency during menstruation. This is because it will lead to a sudden increase in menstrual flow or prolonged menstruation. The reason why you can’t take herbs for regulating qi and blood deficiency during menstruation is that women bleed more during menstruation, and taking herbs that replenish qi and blood will lead to a sudden increase in the amount of menstruation or prolonged menstruation. Chinese medicine believes that “qi can move blood, blood can carry qi”, due to women’s menstruation in the continuous bleeding, taking qi and blood tonic Chinese medicine is easy to make the body’s blood by the drug of qi out of the body, may cause a sudden increase in the amount of menstruation or menstruation prolongation, the efficacy of the medicine will also be greatly reduced. Therefore, it is best to avoid menstruation when taking Chinese medicines for regulating qi and blood deficiency. If the patient has any discomfort, it is recommended to consult a doctor in time and follow the doctor’s instructions for standardized treatment.