Cold back, may be related to environmental factors, may also be rheumatoid spondylitis and other diseases caused by the following: 1. Environmental factors: If you are in a particularly cold environment for a long time, and wear thin clothing, resulting in cold stimulation of the body, will cause a cold back, which is a normal physiological phenomenon, through the timely removal from the cold environment or replacement of thicker clothing, will help to make the phenomenon of cold back gradually alleviate. 2. Rheumatoid spondylitis: the disease is an immune system disease, when the spine is affected by rheumatic inflammation, resulting in the vertebrae bone tissue becomes abnormally fragile, but also prone to cause the back cold, but also can be accompanied by local stiffness, pain and other symptoms. Back cold, if accompanied by other uncomfortable symptoms, should be taken seriously, go to the hospital as soon as possible to see a doctor, a clear diagnosis of the specific causes, by the doctor’s guidance on symptomatic treatment.