Adolescent acne closed mouth acne blackheads are mostly caused by bad habits, improper facial cleaning, androgen secretion, can be improved through life conditioning, medication. 1. Life management: regular work and rest, avoid staying up late; diet should be light and balanced, avoid spicy and greasy stimulating food. Pay attention to facial hygiene and cleanliness, you can use mild cleanser to wash the face, do not use your hands to squeeze pimples, so as not to cause infection; avoid the use of irritating skin care products. 2. Medication: When acne and blackheads are the main manifestation, you can use topical retinoic acid ointment, adapalene gel, benzoyl peroxide gel, azelaic acid cream and other drugs. If necessary, it can be combined with chemical exfoliation, such as salicylic acid, fruit acid, etc. for treatment. For acne with significant inflammatory response need to be combined with drugs such as minocycline, doxycycline. The above drugs can appear local skin burning sensation, skin dryness and other adverse reactions, in the use of these drugs for treatment, must be strictly in accordance with the doctor’s instructions under the guidance of the doctor.