During pregnancy, symptoms of back pain can occur and become more pronounced as the duration of pregnancy increases, especially in the late stages of pregnancy. During pregnancy, the uterus of pregnant women is constantly increasing, and after the uterus increases, the pressure on the pelvis and the lumbar spine will become more and more obvious. The long-term compression of the lumbar spine by the uterus will easily lead to lumbar spine lesions, and may also lead to lumbar muscle strain, which will lead to symptoms of lumbago in pregnant women. If a pregnant woman stands or sits for a long time, it can also lead to an increase in lumbar pain. Secondly, if a pregnant woman has hydronephrosis or kidney stones, she will also be prone to lumbago.