Cracking of the calves in the form of ichthyosis is considered to be related to ichthyosis. It is recommended to do a good job of skin care, under the guidance of the doctor to give topical drugs, if necessary, with oral drug therapy. 1. Skin care: ichthyosis is considered to be related to heredity, different types of ichthyosis, its symptoms are different, usually manifested as dry and flaky skin, ichthyosiform lesions. It is recommended to do a good job of skin moisturizing care, to avoid frequent scratching and stimulation, induced infection. 2. Topical medication: topical medication can be given under the guidance of a doctor, commonly used medications include urea cream, Vitamin A acid cream, Calcipotriol ointment, 10% cholesterol cream, which can moisturize the skin, improve the keratinization, and reduce the scaling effect. 3. Oral medication: ichthyosis is more serious, it is recommended to combine with the doctor’s advice to give isotretinoin, avitamin A, can alleviate the condition, if the skin secondary infection, with oral antibiotics, such as clindamycin and other treatments. The skin of the lower leg is dry and cracked in the form of ichthyosis, and it is recommended to go to the dermatology department of the hospital. The use of drugs need to be under the guidance of a doctor, but also pay attention to the side effects and contraindications of drugs.