Back cold pain is considered to be caused by the patient’s weakened thyroid function, back injury, ankylosing spondylitis, etc. The specific cause of the disease should be confirmed by a doctor’s examination after timely medical treatment. 1. Weakened thyroid function: patients with weakened thyroid function, resulting in reduced secretion of thyroid hormones, the body’s metabolic rate slows down, reducing the release of energy, which in turn leads to a reduction in body heat, and the symptom of a cold back may occur. 2. Back injury: If the patient’s back is recently squeezed, collided and other external injuries, resulting in damage or lesions of the back fascia, the patient will experience back pain. 3. Ankylosing spondylitis: Ankylosing spondylitis caused by genetic, infectious, immune and other factors, the main clinical symptom is inflammatory low back pain, the patient may appear back pain symptoms, accompanied by fatigue, fatigue and other symptoms. If the symptom of back cold and pain occurs, it is recommended to consult a doctor in time to clarify the cause of the disease with the help of the doctor and carry out targeted treatment or therapy.