Cold limbs and easy to catch a cold may be due to Yang deficiency, can be adjusted from the diet and lifestyle habits and take medication and so on. Common causes of Yang deficiency include living in a cold place for a long time, eating too much cold food, having a poor constitution and being sick for a long time. Cold limbs and easy to catch a cold is a manifestation of yang deficiency, and in severe cases, it can also cause fatigue (mental exhaustion, physical weakness), cold pain in the abdomen, diarrhea at dawn and so on. Symptoms can be improved through lifestyle modification, dietary modification, and medication modification. 1. Life management: pay attention to warmth in life, avoid wearing clothes that show the belly button, and do not stay in the air-conditioned room for a long time in summer; moderate exercise, maintain a regular life and do not stay up all night. 2. Diet regulation: diet structure should be reasonable, eat more warm food, such as pepper, lamb, pepper, etc., avoid eating cold and greasy food. 3. Medication: if the limbs are cold with lumbar and knee pain, frequent urination at night, you can take warm kidney and yang drugs, such as the right angelica pill, jin gui ren qi pill, in order to improve the symptoms; such as accompanied by abdominal cold pain, diarrhea, etc., you can take the annexed zi zhongzhong pills in order to warm up the spleen, pay attention to the cold and fever patients should not be taken. 4. Moxibustion: You can choose Da Shi, Guan Yuan, Qi Hai, Kidney Yu, Life Gate, Foot San Li and other acupuncture points for moxibustion to warm and replenish Yang Qi. Cold limbs and easy to catch a cold is recommended to go to the hospital, after the identification of traditional Chinese medicine treatment with medication, do not self-medication, to avoid causing adverse consequences.