Menstruation is an important sign that a girl enters puberty. During menstruation, the systemic and local resistance decreases due to endometrial shedding and bleeding, pelvic bleeding and changes in the systemic neurohumoral regulation system. Therefore, young girls should pay attention to health care during menstruation to prevent dysmenorrhea, menstrual disorders, inflammation of the reproductive tract and other diseases. During menstruation, you should maintain emotional stability and relaxation. Teenage girls should realize that menstruation is a normal physiological phenomenon and an important milestone in the development of girls. Treat it with a calm mind and avoid excessive tension, anxiety and irritation to prevent menstrual disorders. Pay attention to the combination of work and rest during menstruation. It is important to have adequate sleep and rest as well as appropriate activities. Light physical activity and physical exercise can improve the blood circulation in the pelvis, promote the discharge of menstrual blood, and reduce the lower abdomen and lumbosacral and lower limb distension. However, strenuous exercise or heavy physical labor should be avoided. Also pay attention to keeping the lower abdomen and lower limb area warm, do not wade in water, get wet and take a bath with cold water. Enhance nutrition during menstruation. Eat some easily digestible vegetables and fruits during menstruation, and drink more water to ensure smooth bowel movements and avoid constipation and increased discomfort in the lower abdomen. At the same time, avoid eating cold and spicy food, and avoid smoking and alcohol to avoid menstrual disorders and dysmenorrhea. During menstruation, attention should be paid to maintaining general and local hygiene. Since the cervix is loose during menstruation and there is often a small amount of blood in the vagina, bacteria can easily infect the vulva, so special attention should be paid to maintaining the hygiene of the vulva. Choose disinfected, soft and absorbent toilet paper and sanitary napkins, and wash your vulva with warm water every day. During menstruation, you can take a shower, but not a tub bath or a sitz bath.