Fear of cold legs and chills may be caused by Yang deficiency, Yang depression and other aspects, can be used to identify the Diazi Lizhong Pill, Jin Gui Kidney qi Pill, Si Reverse San and other formulas, the specific medication to follow the doctor’s instructions to take. 1. Yang deficiency: Patients often show symptoms of coldness (fear of cold, cold limbs), accompanied by pale color, fatigue (mental exhaustion, physical weakness), long and clear urine, poor digestion, unformed stools or even diarrhea (stools as thin as water or mixed with indigestible food), and so on. Yang deficiency can be treated by warming the spleen and kidneys. If Yang deficiency favors the spleen, one can choose Lizhong Pill, etc. If Yang deficiency favors the kidneys, one can choose Jin Gui Kidney Qi Pill and Yu Gui Pill. 2. Yang depression: mostly caused by liver qi stagnation (liver qi and blood transportation is not smooth, emotional depression), qi is unfavorable, yang qi in the body can not reach the surface of the muscle, the limbs can not be warmed to feel the cold. This kind of patients are easy to be agitated, more disturbed, feel heat in the body, while the skin feels cold, etc., when the liver relief (by dredging the liver qi to treat depression) is the main, can be used in the Four Reversed San, Chai Hu Shuo Liver San and so on. In addition to the above two possibilities, the feeling of external wind, cold and dampness can also occur. It is often accompanied by a feeling of severe pain, which can be diagnosed and selected such as Gui Zhi Shao Yao Zhi Mu Tang, Wu Tou Tang, and so on. Legs afraid of cold and cold causes are diverse, the use of medication is also different, it is recommended to go to the hospital, under the guidance of a professional doctor to use medication, to avoid blind use of medication.