Acne on the back is usually caused by acne, which is an inflammatory disease that can be solved by lifestyle regulation, medication and phototherapy. 1. Lifestyle regulation: Avoid eating spicy stimulating and greasy food, eat a light diet, drink more water, eat more fresh vegetables and fruits, less salt and less oil. Ensure adequate sleep, regular routine, try not to stay up late, keep the back skin clean and hygienic, you can use the appropriate to remove the oil shower gel. 2. medication: including topical creams and oral medications, topical creams such as retinoic acid cream, adapalene gel, etc., the use of some patients may appear skin tingling, itching, dryness and other side effects, acute or subacute dermatitis patients are prohibited. Oral medications, including clarithromycin, doxycycline and other antibiotics, should be excluded from the contraindications under the guidance of a doctor. 3. Photoelectricity treatment: the doctor assessed the existence of indications can be considered to use fractional laser and other photoelectric treatment. If the patient’s back acne symptoms are not relieved, you need to go to the hospital in a timely manner, the above drugs need to be used under the guidance of a doctor, avoid self-medication.