Breastmilk will not decrease after menstruation. The amount of breastmilk produced is mainly related to whether the mother has enough nutrient supply, individual differences, etc., so there is no need to worry about breastmilk decreasing after menstruation. It is a normal physiological phenomenon that the ovaries are recovering after menstruation. At this time, you still need to insist on breastfeeding, take more rest, drink more water, eat more food with soup, and increase protein intake to increase breast milk and ensure sufficient milk supply. Breastfeeding menstruation must pay attention to more rest, avoid exertion, drink more soup, keep a happy mood, avoid the endocrine impact of the situation, during the period of menstruation should pay attention to the vulva clean and dry.