The causes of coldness in the back may be cold in the bladder meridian or the dukkha meridian, deficiency of the body, deficiency of Wei qi, etc. The bladder meridian and the dukkha meridian circulate in the back. 1. The Bladder Meridian and the Directing Vessel both circulate in the back, and if cold attacks these two meridians, the yang qi in the two meridians will be blocked, and the back will become cold, and there will also be symptoms such as constriction in the back (spasm and convulsions due to wind-cold sensation) and bad wind. It can be treated by acupuncture and massage. 2. People who have been sick for a long time and are not endowed with enough innate talent (poor innate constitution and function) will also feel cold at the back, and in addition to being cold, they may also have the performance of having less qi and laziness (lack of strength, not wanting to speak), weakness of hands and feet, etc. They can take medicines to tonify the spleen and kidneys, such as Li-Zhong Pills and Jin Gui Kidney qi pills. 3. Wei Qi is the part of the whole body that is smooth and has the function of warming the whole body. If the Wei Qi is deficient, can not be pronounced on the surface of the body, the Wei surface is not solid, the back of the cold symptoms will occur. This kind of situation is mostly seen in the feeling of external evil caused by the lung guard not solid, you can take the harmonization of Yingwei (make the body’s internal and external qi smooth, each in its own way) of the drugs to regulate, such as Gui Zhi Tang and so on. For those who are afraid of cold in the back, it is recommended to go to a regular hospital for treatment under the guidance of a professional doctor.