Pregnancy lumbar pain is a common symptom during pregnancy, related to increased hormone secretion and uterine compression after pregnancy, and we should also be alert to the presence of disease factors such as calcium deficiency and lumbar disc herniation, and give timely and clear diagnosis and treatment. Non-disease factors: 1. increased hormone secretion: increased HCG secretion in pregnant women will lead to pelvic vascular congestion, pelvic ligaments and intervertebral joint ligaments relaxation, which will easily cause lumbar pain; 2. uterine compression: with the increase of pregnancy weeks, the uterus will gradually increase, especially in the middle and late pregnancy, the enlarged uterus can compress the lumbosacral nerves, which may lead to lumbar pain or even leg pain. Second, disease factors: 1, calcium deficiency: pregnant women’s body calcium deficiency may also appear lumbar acid symptoms, it is recommended that calcium supplementation treatment; 2, lumbar disc protrusion: during pregnancy, the lumbar spine ligaments tend to relax, affecting the stability of the lumbar spine, resulting in the rupture of the fibrous ring, causing lumbar disc protrusion, it is recommended that appropriate rest and avoid weight bearing; 3, pre-eclampsia: pre-eclampsia may appear lumbar and abdominal acidity, mainly manifested as pregnancy after A small amount of vaginal bleeding accompanied by mild lower abdominal pain, it is recommended to preserve the pregnancy; 4, fetal abortion: if a pregnant woman feels severe abdominal pain in the early stages of pregnancy, or found accompanied by vaginal bleeding, this situation is considered to be fetal abortion, need to promptly check and stop the pregnancy after diagnosis.