The symptoms of back pain are more common in pregnant women who are more than five months pregnant. The main causes of this symptom include: a. Many pregnant women have symptoms of low back pain when they walk for a long time, or stand too long or sit too long. This situation is due to prolonged maintenance of a posture, the muscle fatigue of the waist, causing symptoms of lumbago. You can massage and apply hot compresses locally and move your body appropriately to relieve the symptoms. Second, the lack of calcium during pregnancy is also the main reason for the symptoms of lumbago, which is directly related to the lack of calcium leading to osteoporosis. Pregnant women can eat more shrimp, milk, soy products and other calcium supplements in their daily diet to relieve the symptoms of lumbago caused by calcium deficiency. Third, the faster the abdomen increases during pregnancy, the more obvious the symptoms of low back pain. Pregnant women should control their diet properly to avoid excessive weight gain.