Thoracic spine is cold and chilly considering physiological reasons, fasciitis, thoracic spine tuberculosis, osteoporosis, ankylosing spondylitis and other reasons. 1. Physiological reasons: prolonged exposure to cold environment or frequent bed-ridden inactivity can result in poor local blood circulation and cold sensation, which can be improved by keeping warm. 2. Fasciitis: Chronic strain or trauma can cause aseptic inflammation of the muscle fascia of the chest and back, poor local circulation and impaired sensation. It can be improved through massage and appropriate activities. 3. Thoracic spine tuberculosis: when tuberculosis occurs abscess can also appear localized coldness and coolness, spinal activity is limited, through the film can be clearly diagnosed, the need for anti-tuberculosis treatment. 4. Osteoporosis: excessive calcium loss can cause osteoporosis and coldness in the thoracic spine. 5. Ankylosing spondylitis: Ankylosing spondylitis is a rheumatologic immune disease that causes coldness in the spine, pain and morning stiffness. Thoracic spine is cold and cool for many reasons, if it happens often, it is best to go to the hospital to see a clear diagnosis and follow the doctor’s instructions for treatment.