After menstruation, the odor of leucorrhea is most likely vaginal inflammation. When menstruating, women’s body constitution is reduced, and immunity is also low, menstrual blood is also the best medium for bacteria, vulva is also moist, after using sanitary napkin makes vulva impermeable, so the environment is most suitable for bacterial growth and invasion, so when menstruating women should pay attention to rest, change sanitary napkin regularly, keep the lower body ventilated, and pay attention to the cleanliness of vulva, wash vulva and change underwear daily, but when washing vulva, do not take a tub bath, and do not douche vagina.