Low back pain after delivery is a common discomfort for women after delivery, usually accompanied by back pain, lumbago, etc., caused by more reasons, can also be caused by a combination of reasons, commonly caused by the following: 1, posterior position of the uterus: when the woman’s uterus is posterior, the increased uterus during pregnancy backward pressure on the intervertebral discs and lumbosacral nerves, usually cause low back pain, will gradually ease after delivery, usually three months later will gradually return to normal; 2, contractions Stimulation: women after normal delivery due to contraction stimulation resulting in lumbosacral congestion, may cause lumbar pain, usually lasts about a week; 3, lumbar muscle strain: uterine compression during pregnancy will cause women to have separation of the rectus abdominis muscle, visceral protrusion, displacement of visceral position, etc., resulting in changes in the force of the lumbar back, coupled with the pelvic floor tissues for a long time, easy to cause lumbar muscle strain, can occur lumbar pain; 4, bad posture. After normal delivery, women spend too much time in bed or breastfeeding in incorrect posture, which compresses the lumbar nerves, thus leading to lumbar pain; 5, other: inadequate postpartum warming measures lead to lumbar cold, lifting heavy objects with improper force, etc. can lead to lumbar pain. In addition to lumbago, it is also necessary to closely observe whether it is accompanied by abdominal pain, malodorous odor, if the above-mentioned conditions, may be secondary to gynecological inflammation, should be treated in a timely manner.