The main reason for dry legs and cracks is dry skin, which may also be related to common ichthyosis, it is recommended to determine the cause roughly first, and then carry out targeted treatment. 1, dry skin: due to excessive cleaning, dry and cold environment, lack of maintenance, etc. can also trigger dry legs with cracks. You can improve the dryness by placing humidifier in the room, using skin care products with strong moisturizing function such as containing Vaseline or vitamin E externally, or using vitamin E cream; 2, common type ichthyosis: generally caused by family inheritance, as soon as you are born, usually manifests as dry and rough skin, with fine scales on the surface of the skin, mostly light brown or dark brown, preferably on the lower limbs, in winter Most common, summer will be relatively less. Treatment is based on moisturizing. Topical application of 10%-20% allantoin cream or a small amount of vitamin A cream, together with dietary therapy, such as eating more carrots, animal liver, pumpkin and other foods rich in vitamin A. In addition to symptomatic treatment, you also need to pay attention to improve daily habits, drink more water, reduce the consumption of coffee and spicy stimulating food, eat more vitamin and protein-rich food, to ensure a balanced nutrition, in order to keep the skin hydrated, healthy state.