What is lumbar disc herniation during pregnancy? It is a herniated lumbar disc that occurs during pregnancy. Surveys have shown that the incidence of lumbar disc herniation is higher in women than in the general population, but the incidence is not directly related to maternal age or the weight of the fetus. It is evident that pregnancy is one of the factors predisposing to lumbar disc herniation, which is related to the increase in maternal anterior lumbar protrusion during pregnancy with the gradual increase in fetal size and weight. In addition, due to the change of maternal endocrine during pregnancy, the ligaments around the lumbar spine and pelvis relax, and the connection between sacroiliac and lumbosacral relax, together with the increase of weight bearing and the change of the physiological curvature of the lumbar spine, so the incidence of maternal lumbar disc herniation during pregnancy is higher. In view of the above-mentioned morbidity characteristics and causes, clinical knowledge of pregnancy and perinatal health care should be enhanced, and timely consultation should be made once low back pain or radiating pain of lower limbs occurs.