Cold feet easily may be due to Yang deficiency. Yang deficiency refers to a series of clinical symptoms triggered by the body’s lack of yang energy and weakened warming function. Most of them develop from long-term qi deficiency. It is related to diet, living in a cold place for a long time, old age and prolonged illness, and poor congenital constitution. Symptoms include pale or gray-black color, fear of cold, low temperature of hands and feet, mental fatigue and swelling. Yang deficiency can be divided into heart yang deficiency, kidney yang deficiency and spleen yang deficiency, which need to be treated with dialectic medication according to the patient’s condition. For example, heart yang deficiency can be treated with Baoyuan Tang; kidney yang deficiency can be treated with Right Angelica Pill; spleen yang deficiency can be treated with Lizhong Pill with Pineapple. Cold feet should be adjusted under the guidance of a professional doctor, and should not be blindly used on their own, so as not to delay the condition.