Acne on the back, also known as common acne, can be treated with the following methods: i. retinoids, oral isotretinoin capsules to reduce sebaceous gland secretion; ii. antibiotics, oral minocycline capsules, roxithromycin capsules, tanshinone capsules, etc., to inhibit the reproduction of Propionibacterium acnes on the face; iii. estrogen, oral daing-35 can be used for treatment; iv. herbal treatment, oral Chinese medicine to clear heat acne capsules, compound pearl acne tablets, acne pills, etc.; v. Topical drug treatment, you can use topical adapalene gel, clindamycin phosphate gel, benzoyl peroxide gel, etc.; vi. Physical therapy, you can use photodynamic or red and blue light treatment.