Back acne is generally a chronic inflammatory disease of the hair follicles and sebaceous glands called acne, and the method of removal needs to be based on the degree of the disease to formulate a treatment plan, mild to moderate acne can be used externally with retinoids, moderate to severe acne in addition to topical retinoids, oral antibiotics, isotretinoin and other systemic treatments, and should also be adjusted to the habits of life. 1. For mild to moderate acne, topical retinoids (retinol ointment, adapalene gel, etc.) can be applied to the affected area. 2. For moderate to severe acne, systematic treatment is needed, except for the combination of topical Vitamin A cream and antibiotics (fusidic acid cream), and oral antibiotics such as doxycycline, minocycline, isotretinoin and other medications. If you have acne on your back, you need to take care of your daily routine and avoid eating spicy food. You need to go to the dermatology department of the hospital to consult the doctor and use the appropriate medication under the doctor’s guidance.