Acne vulgaris is a medical term for common acne, which can be improved through general treatment, medication, and physical therapy. 1. General treatment: For patients with recurring acne vulgaris, it is recommended to improve their lifestyle, such as adjusting their diet and work routine. Eat a light diet and reduce the consumption of food such as cakes, fatty meats and chili peppers. At the same time, it is necessary to have a regular routine, go to bed early and get up early to help improve the symptoms. 2. Medication: patients need to follow the doctor’s instructions to apply retinoic acid medication, such as adapalene, tazarotene and other gels, with anti-inflammatory, dissolving acne effect, can improve the symptoms of the chin. You can also use topical benzoyl peroxide under the guidance of a doctor to kill Propionibacterium acnes, which can help the disease recover. 3. Physical therapy: For mild and severe patients, you can also consider using red and blue light irradiation or photodynamic therapy, which can kill the Propionibacterium acnes bacteria in the affected area, help reduce inflammation and promote the recovery of the disease. If acne vulgaris on the chin is recurring, it is recommended that the patient go to a regular hospital and cooperate with the doctor for standardized treatment.