Acne on the left side of the face can be treated with the following methods: First, retinoic acid drugs, oral isotretinoin capsules to reduce oil secretion; Second, antibiotics, because there is a large number of acne propionibacterium breeding on the face, you can take oral minocycline capsules, roxithromycin capsules, etc.; Third, estrogen, because acne patients androgen secretion is strong, you can take oral da-ying-35; Fourth, Chinese medicine treatment, oral clearing acne capsule, acne pills Fifth, topical drug treatment, you can use topical adapalene gel, clindamycin phosphate gel, benzoyl peroxide gel, etc.; Sixth, treatment with fruit acid or supramolecular salicylic acid; Seventh, physical therapy, you can use red and blue light irradiation or photodynamic therapy.