Back pain when sleeping, there are several reasons for this: 1, the initial stage of viral cold, there will be viruses, bacteria, antigens, antibodies, microorganisms invade the body to trigger the immune response, then there are all over the body aches, especially the back pain is more obvious. 2, back pain when sleeping, such as the previous day too much exercise, start the latissimus dorsi, rectus abdominis, external abdominal oblique muscle, oblique muscle, scapular muscle, there will also be when sleeping 3, back pain when sleeping, if the disease of the heart will also have this symptom, such as instability heart disease, coronary heart disease, myocardial ischemia, when sleeping will also have chest tightness, shortness of breath, back pain. 4, diseases of the chest, such as pleurisy, pneumothorax, osteochondritis, lung infection, pneumonia, will also have the symptom of back pain when sleeping.