Keratosis pilaris generally refers to perifollicular keratosis, the etiology of which is not yet well defined and may be related to vitamin A deficiency, heredity, metabolic disorders and other factors. Perifollicular keratosis is a skin disease with hyperkeratosis of the epidermis as the main change, the cause of which is not yet clear, and is generally believed to be related to vitamin A deficiency, autosomal dominant inheritance, metabolic disorders, and other factors, which may lead to aggravation of the condition when the climate is dry and cold. Keratosis pilaris is prevalent in the limbs, mainly manifested as small papules centered on hair follicles, into a chicken skin-like appearance, feel rough, generally no itching, pain and other symptoms, will not cause systemic diseases, generally do not need treatment, self-consciousness affects the aesthetics of the use of moisturizing creams can be used to apply, if necessary, the use of vitamin A, salicylic acid ointment and other medications. It is recommended that patients with keratosis pilaris do not need to be overly nervous, if necessary, timely medical treatment, standardized treatment under the guidance of the doctor, avoid private medication, so as not to delay the condition.