Pustular acne on the chin, clinically known as papulopustular acne, can be treated by skin cleansing, medication, or through phototherapy. Papulopustular acne, one of the common types of acne, is characterized by relatively superficial inflammatory papules and pustules, usually <5mm in diameter. 1. Skin cleansing: use gentle cleansers rather than soaps or scrubs; avoid scrubbing the skin to avoid mechanical damage; choose skin care products and cosmetics that do not cause acne; avoid picking at acne lesions; increased intake of dairy and a diet with a high glycemic load have been associated with acne vulgaris, so reduce the intake of such foods. 2. Medication: For mild papular-pustular acne, topical retinoic acid can be used in combination with topical antimicrobials (e.g., benzoyl peroxide monotherapy, or benzoyl peroxide ± topical clindamycin); systemic treatments, such as hormonal medications, antibiotics, and oral isotretinoin, are necessary for moderate to severe acne vulgaris. 3. Photoelectricity treatment: Currently, broad-spectrum continuous wave visible light source (blue light and red light), intense pulsed light, photodynamic therapy, etc. are commonly used in clinical practice, which can be used as an adjunctive treatment for acne. It is recommended that patients who wish to be treated go to the dermatology department of a regular hospital, follow the recommendations of the specialist to standardize the treatment, and avoid blind self-medication, so as not to cause adverse consequences.