Allergic acne patients first need to identify and stay away from allergy-causing factors, and then use topical azelaic acid drugs, benzoyl peroxide, antibiotics and other medications according to individual conditions, and it is recommended to use medications under the guidance of a doctor. 1. Azelaic acid drugs: patients with allergic acne can follow the doctor’s instructions to use topical azelaic acid drugs, such as azelaic acid cream, etc., which can reduce the surface of the skin, hair follicles and sebaceous glands of the bacterial flora, dissolve acne, and so on. 2. Benzoyl peroxide: patients can follow the doctor’s instructions for external use of benzoyl peroxide gel, which has the effect of killing Propionibacterium acnes, astringent pores and so on. 3. Antibiotics: patients can also follow the doctor’s instructions for topical use of fusidic acid cream, erythromycin ointment and other antibiotics, which can play a role in anti-inflammatory, antibacterial effect. For allergic acne patients, it is recommended to go to the hospital, under the guidance of the doctor to use drugs, not self-medication, to avoid aggravating the condition.