If you feel cold in the back, there are usually several factors as follows: 1, from the perspective of Western medicine, the most common cause of cold in the back is insufficient blood supply from the coronary arteries, usually the human coronary arteries are divided into three major circulations, there are the left anterior descending branch, the left gyral branch and the right coronary artery, in the case of blockage of the right coronary artery or insufficient blood supply, there will be clinical symptoms of cold in the back. 2, cold in the back may also have lung disease, such as In the case of pulmonary insufficiency, pulmonary heart disease, and pulmonary hypertension, pulmonary insufficiency can cause a cold back. 3, rheumatism, such as rheumatic spondylitis, will also have clinical symptoms of a cold back. 4, from the perspective of Chinese medicine, belongs to the category of deficiency evidence, Qi deficiency and blood deficiency will be consciously felt when the back is cold.