Cold feet and hands may be due to Yang deficiency or blood deficiency and cold syncope. Yang deficiency is mostly due to injury of yang by prolonged illness, or further development of qi deficiency; or living in a cold place for a long time, or overdosing on bitter, cold and refreshing products, which depletes yang qi. In addition to cold hands and feet, the patient is also accompanied by fear of cold, light mouth without thirst, or like hot drinks, or spontaneous sweating (involuntary sweating during the day, a little movement sweating aggravated), urine clear long or urine less swelling, thin stools, white color, and so on. If the blood of the body is deficient and the meridians are affected by cold, the cold is stagnant and the blood is unfavorable, the yang qi cannot reach the ends of the limbs, and the camping blood cannot fill up the blood veins, the patient will also have cold hands and feet, accompanied by pain in the waist, femur, leg, foot, shoulder and arm. If you have a related condition, it is recommended to be treated under the guidance of a professional physician to identify the symptoms, and not blindly self-medication.