Chicken skin is also known as keratosis pilaris, chicken skin on the arm can be treated by medication and physical therapy, etc., need to follow the doctor’s instructions. 1. Drug treatment: commonly used drugs are Vitamin A acid, tazarotene and so on. It can inhibit the proliferation of skin keratinocytes, thus inhibiting the growth of epithelium and preventing the blockage of keratosis pilaris. Adverse reactions include localized skin flushing, flaking and burning sensation. Pregnant women, lactating women and those who are allergic to the ingredients of the drug are prohibited. 2. Physical therapy: skin damage can be improved after physical therapy such as fruit acid skin resurfacing, and there are generally no significant adverse reactions after treatment. It should be noted that if the patient appears to arm chicken skin performance, should go to the hospital in time, active treatment, so as not to delay the condition.