Pregnant women with lumbar pain may be lumbar strain, pelvic soft tissue compression, inflammatory pain that can radiate to the waist, but also consider lumbar disc herniation, especially in late pregnancy, the fetus grows larger, the spinal load of pregnant women is getting heavier and heavier, long-term continue to easily lead to lumbar strain. If there is a bulging lumbar disc before, or the base of the lumbar disc herniation changes, pregnancy may aggravate, and it will not get better after delivery. The herniated disc compresses the lumbar spine and the nerve roots from the spinal cord. The lumbar nerve roots form the lumbar plexus nerve in the lumbar region, which sends out the sciatic and femoral nerves, and the nerve roots are compressed, resulting in pain in the sciatic nerve travel area, i.e. lumbar pain and leg pain. During pregnancy, conservative treatment is recommended, and after the baby is delivered, go for a lumbar MRI to assess the extent of the herniated disc and see if surgery is required.