Menstruation back pain, the common reason is that the uterus is posterior flexion and tilt position, the pelvis is in a state of congestion during menstruation, there will be a feeling of back pain, you can change the position to rest, such as lying on the bed to rest or do the lumbosacral and lower abdomen hot compresses, so that the menstrual blood outflow is more smooth, it will ease the situation of back pain. It is recommended that women pay attention to personal hygiene in daily life, keep the vulva clean, reduce the operation of the uterus, such as not planning to get pregnant, to do a good job of contraception, to avoid pregnancy caused by abortion, abortion may lead to pelvic inflammatory disease or other gynecological inflammation, there will be a uterus after the flexion of posterior tilt, mainly because of inflammation of ligaments elasticity decline, pull the uterus after the flexion of posterior tilt of the situation.