Low back pain is a common occurrence in pregnancy. Generally, mild low back pain is often physiological in nature and should not be a cause for concern. Because the uterus starts to increase in size after pregnancy, the ligaments that hold the uterus in place can be stretched and lower back pain can occur, which is then manifested as a mild soreness and swelling. As the weight of the fetus and amniotic fluid increases, the pressure on the pregnant woman’s lumbar spine also increases and her body tilts backwards. In order to maintain balance, the pregnant woman’s lumbar muscles need to maintain a contracted state to push backwards, and over time the tense muscles are not relaxed, which will naturally cause back pain. This kind of fatigue generated by the back pain, after getting sufficient rest or production will gradually recover. In addition, when a pregnant woman lies in bed all day and does not pay attention to proper exercise, the pelvic cavity may produce blood stasis and cannot bear the pressure on the abdomen, resulting in low back discomfort. Or if you do not pay attention to rest and overexertion, it may cause lumbar muscle injury and lower back pain. If the pain is severe, you should be alert to the presence of lumbar spine diseases, such as lumbar disc herniation or lumbar muscle strain, and also be alert to the presence of placental abruption in late pregnancy, and need to seek medical attention for a clear diagnosis. Although lumbar pain during pregnancy is a more common symptom, it can also be relieved through relevant measures. Such as pregnant women should learn to choose the right chair for themselves, the height should be moderate, to 40 cm is appropriate. Sitting to maintain a good center of gravity, as far as possible to the back of the chair to reduce the force on their bodies. Secondly, pregnant women need to choose a hard bed, not suitable for sleeping on a bed of too soft material, while avoiding weight-bearing exercise. In addition, daily attention should be paid to the abdomen to keep warm and do a good job of cold.