The difference between white and red motherwort is that white motherwort focuses on promoting water retention and regulating menstruation, while red motherwort focuses on invigorating blood circulation and removing blood stasis (promoting blood circulation and eliminating blood stasis in the body). Motherwort is bitter, pungent and slightly cold in flavor, and belongs to the liver, heart and bladder meridians. It has the efficacy of activating blood circulation and regulating menstruation (regulating menstruation by activating blood circulation), diuretic and eliminating swelling, clearing heat and removing toxins (removing heat and toxins and evil qi from the body), and is mainly used in treating amenorrhea with stagnant blood circulation, dysmenorrhea, irregular menstruation, and postnatal discharges of evil dews, which is an important medicine for gynecology. Motherwort has white flowers and red flowers. White-flowered motherwort, focusing on water regulating menstruation, nourishing blood and blood, clinically used for anemia, menstrual disorders, etc.; red-flowered motherwort, focusing on activating blood circulation and removing blood stasis, to activate the blood without harming the positive qi, clinically used for menstrual disorders, menstrual cramps and other conditions. As motherwort has the effect of activating blood, pregnant women should be cautious of using it. If there is a need for medication, it is recommended to use it under the guidance of a Chinese medicine practitioner to ensure the safety of medication and reduce the risk of medication.