Pregnant women after the emergence of back pain is common for the following reasons: 1, may be pregnant women to the late stages of pregnancy, long-term must be waist and back up to walk, this situation leads to back muscle strain and caused. 2, may be the back of the fasciitis, back muscle surface fascia aseptic inflammation. 3, if the pain site in the middle of the back of the spinal column, may be the spinal column of the small joints subluxation, usually when pressing the pain will be more painful, and the pain point is more clear, in the back or chest activities, there may be limited movement. 4, may be cervical spondylosis, cervical spondylosis degenerative disease. Generally, when pressed, it will be more painful, and the pain point is more clear, in the back or chest activities, there may be a restriction of activities. 4, may be caused by cervical spondylosis cervical spondylosis degenerative changes, such as intervertebral discs, osteophytes, or small joints are misaligned, compression of the nerve root of the back of the shoulder, the back of the shoulders of the nerve tugging pain. If the pain cannot be relieved by self-medication, it is recommended to consult a doctor in the hospital, except for other diseases.