Swelling during menstruation is caused by increased hormone levels around the time of menstruation, resulting in edema caused by water and sodium retention. Generally, if the symptoms are not serious, the swelling can be left untreated and can be observed, and with the end of menstruation, the swelling will gradually decrease or even disappear, which is physiological. However, some women have more serious swelling and discomfort during menstruation, you can also give some drugs or food to regulate, such as a low-salt diet before and after menstruation, you can give some red beans and barley porridge, which can play a role in reducing dampness and swelling. In addition, you can also boil water with winter melon skin to drink, can play a role in the treatment of edema, more serious can also be given some diuretic drugs taken orally to treat the swelling of menstruation.