Skin long chicken skin small particles, considered for peri-corneal keratosis, also commonly known as chicken skin, its etiology is not yet clear, considered and autosomal dominant genetics, vitamin A deficiency, endocrine and other factors have a relationship. At present, the clinical cause of perifollicular keratosis is not clear, mainly considered and the patient’s autosomal dominant inheritance, as well as the body lack of vitamin A, endocrine disorders and other factors have a close relationship. Keratosis pilaris can be triggered by endocrine disorders such as hypothyroidism and the use of glucocorticoid medication. Keratosis pilaris can lead to the appearance of normal skin color or reddish pimples, like chicken skin appearance, and the skin has a rough feeling, these lesions occur in the outer upper arms and thighs, occasionally itchy feeling. Once the phenomenon of chicken skin granules appears, it is important to pay attention to the timely consultation and treatment in the hospital.