Chicken skin is keratosis pilaris, there is no such thing as the most effective treatment for keratosis pilaris on the back, it can be eliminated by medication and laser treatment. 1.Medication (1) Topical drugs: such as retinoic acid drugs, commonly used drugs are retinoic acid ointment, salicylic acid ointment and so on. It can soften or dissolve the keratin and improve the symptoms. Fruit acids can also be used to reduce the adhesion of skin keratin-forming cells and keratin accumulation, and promote the shedding of keratin plugs at the mouth of hair follicles. Daily use of moisturizing cream to moisturize. (2) Oral medications: such as vitamin A and retinoids, for those with severe conditions. Long-term use can appear itchy skin, dry lips, fatigue and other adverse reactions. Vitamin A and vitamin A acid have teratogenic effects, and are prohibited for pregnant women, lactating women and those who are allergic to the ingredients of the drugs. 2. Laser treatment: the use of laser heat, to reach the skin tissue to dissolve the blocked follicle mouth to relieve the symptoms of keratosis pilaris, after treatment, the skin damage is improved, there is generally no significant adverse reactions after treatment. Patients with keratosis pilaris on the back are advised to go to the hospital in time and under the doctor’s treatment to carry out active treatment.