Acne blackheads are open pimples, which belong to a kind of acne and can be treated by general treatment, topical medication and chemical peeling. 1. General treatment: general treatment choose water or suitable cleansing products to remove excess oil, dander and bacterial mixture on the skin surface, pay attention to oil control and moisturizing, and use mild moisturizing milk externally. Avoid squeezing and scratching the skin lesions with hands. Limit the intake of high glycemic index foods and milk that may trigger or aggravate acne, keep bowel movement smooth, and avoid staying up all night. 2. Topical medication: Topical retinoids such as adapalene can be used, and azelaic acid can also be used topically to reduce post-inflammatory hyperpigmentation. 3. Chemical peeling: Chemical peeling therapy is used as an adjunctive treatment. Common peeling agents include fruit acid and salicylic acid, which can help remove open pimples. Patients with open pimples should go to the hospital in time to avoid self-medication, so as not to delay the condition.