The causes of coldness in the back are broadly categorized into physiological and pathological factors. Physiological factors are mostly related to the indoor temperature and the thickness of clothing, while pathological factors are mainly caused by the deficiency of yang qi. 1. Physiological factors: This condition is mostly caused by sudden changes in weather, thin clothing and low indoor temperature, which can be relieved by adjusting the indoor temperature and adding more clothes, and does not require special treatment. 2. Pathological factors: the situation is mostly related to the deficiency of yang qi, Chinese medicine believes that yang qi has the function of warming and promoting, when the body’s yang qi deficiency, warming and promoting the function of malfunction, the skin and muscles of the back do not get the normal warmth, which produces a cold behind the back of the disease. If you have a cold back, it is recommended that you go to a regular hospital for treatment under the guidance of a professional physician.