The treatments for chin acne and closed mouth include general treatment, topical medication, systemic medication, and other treatments. 1. General treatment: choose water or suitable cleansing products to remove excess oil, dander and bacterial mixtures on the skin surface, but not excessive cleaning, pay attention to oil control and moisturizing. 2. Topical medication: Vitamin A acid ointment, adapalene gel, benzoyl peroxide, fusidic acid cream, azelaic acid and other medications can be used externally as prescribed by the doctor. 3. Systemic medication: oral doxycycline and other antibiotics as prescribed by the doctor, and oral isotretinoin and other medications for severe acne. 4. Other treatments: use LED blue light or red light to treat mild and moderate lesions; when closed-cell acne is the main cause, combined with chemical exfoliation, such as salicylic acid, fruit acid and so on. It is recommended that people with a lot of acne and closed mouth on the chin go to the hospital in a timely manner to clarify the cause of the disease and standardize the treatment under the guidance of the doctor. The use of drugs need to follow the doctor’s instructions.