Drinking brown sugar water during menstruation has the following benefits: First, it activates blood circulation and removes blood stasis, as brown sugar water can facilitate uterine contraction and speed up blood circulation, making menstrual blood flow more smoothly. Second, the analgesic effect, brown sugar water contains calcium and magnesium, can synergistically play the role of analgesic, soothing, effective relief of menstrual pain. Third, it can dispel cold and warm the stomach, which can make the body warm and increase energy. Fourth, it can promote digestion, because brown sugar is unrefined and retains many nutrients needed by the body, so brown sugar not only strengthens the spleen and stomach, but also is easily digested and absorbed. Fifth, it replenishes qi and benefits blood. Brown sugar is the preferred tonic for maintaining qi and blood. If women with weak constitution and little menstruation, they can take it in moderation during their menstrual period. Therefore, drinking brown sugar water during menstruation will have the above benefits.