Chicken skin refers to perifollicular keratosis, generally this disease does not need to be treated, if the blackening can be considered medication. It may be related to autosomal dominant inheritance, vitamin A deficiency, endocrine factors and so on. The main manifestation is normal skin color or light reddish papules with chicken skin-like appearance and roughness of the skin. Tazarotene gel, 3%~5% salicylic acid ointment, and 10%~20% cod liver oil ointment can be used to soften or dissolve the keratin and improve the symptoms. Patients are also advised to use moisturizers to relieve dry skin, and moderate-acting glucocorticosteroids, such as tretinoin cream, can be used in combination with topical application if the lesions are severe. Oral vitamin A and vitamin E can also be taken to improve symptoms. In addition to the use of the above drugs, blackened people can also be used in accordance with the condition of the use of cumulonimbus ointment and other treatments, if necessary, combined with intense pulsed light therapy. All of the above drugs should be used in accordance with the doctor’s instructions, do not self-medication. If the keratosis pilaris lesions aggravate, you should consult a doctor in time and follow the doctor’s instructions.