Dry skin on feet and legs is related to physiological factors such as lack of moisture, excessive cleaning, or due to lack of trace elements and ichthyosis, which should be treated according to the causes of daily care and medication. 1. Physiological factors: if you don’t like to drink water, resulting in a large lack of water in the body, easy to cause dry skin on the feet and legs; it is recommended to drink more water to ensure adequate moisture. For excessive cleaning caused by dry skin, need to pay attention to moderation, reduce the number of cleaning. 2. Lack of trace elements: for example, lack of vitamin A, vitamin B2, etc., may cause dry skin, cracks, can be found through trace element screening, and then timely supplementation. 3. Ichthyosis: most of them are due to family genetics, mainly dry skin as clinical manifestations, and accompanied by ichthyosiform scales. Can be used externally emollient, so that the skin moisturizing, such as urea ointment, petroleum jelly, etc., if necessary, you can take oral vitamin A acid. Calf skin dryness, such as the above factors, should be targeted under the guidance of a professional physician to avoid unauthorized use of drugs to cause adverse reactions.