Ichthyosis is a hereditary keratosis pilaris skin disorder, which is characterized by dry skin with ichthyoscale-like flaking. Ichthyosis is mostly found in children and manifests as dry, rough, scaly skin on the limbs or trunk, with a scaly appearance like ichthyosis or snakeskin. The cause of ichthyosis is closely related to genetic factors, so ichthyosis cannot be completely cured. For the treatment of ichthyosis, the current main symptomatic treatment, ichthyosis can be used topical moisturizer to keep the skin moist, but also oral vitamin A or vitamin A acid drugs. In addition, the patient’s local symptoms are more obvious, can also be used topical glucocorticoid ointment or Vitamin A ointment to improve the keratinization of the skin.