Butt pain during menstruation is considered to be caused by pelvic stasis, uterine congestion, and lumbosacral soreness during menstruation. Sometimes the uterus is posterior, due to uterine congestion, pressure on the rectum, buttock pain will be more obvious. Pay attention to observe, if the pain can disappear after menstruation, it is usually not important. It needs to be differentiated from endometritis and pelvic inflammatory disease. This condition is usually accompanied by increased vaginal discharge, odor or purulent, increased menstrual flow, dribbling and so on. During menstruation, pay attention to abdominal warmth, eat a light diet, avoid raw, cold stimulating food, avoid touching cold water, eat more protein-rich food, strengthen nutrition, enhance physical fitness, eat more fresh fruits and vegetables. Keep a happy mood during menstruation, do not stay up late, tired, avoid strenuous exercise.