Low back pain can be seen in many women who give birth vaginally. The symptoms are mainly related to improper straining during delivery and pelvic congestion caused by the stimulation of the uterus during the passage of the fetus through the birth canal. Most of these symptoms are relieved gradually as the woman resumes her normal life after delivery. After delivery, women should pay attention not to rest in bed for a long time, not to sit for a long time without activity, and should get out of bed early for physical exercise, and not to perform excessive forward or backward bending movements. At the same time, we should pay attention to strengthen the care, pay attention to keep warm and avoid being stimulated by cool wind. Appropriate calcium supplements after childbirth can help relieve the symptoms of back pain. The mother should pay attention to eating more calcium-rich foods, such as soybeans, black beans, tofu, milk and yogurt. Those with more serious symptoms can be treated by physical methods such as local hot compresses, baking and massage.