Closed mouth pimples are a type of acne, also known as whiteheads, which can be treated through general treatment, dietary regimen, medication and other methods. 1. General treatment: Keep the facial skin clean and hygienic, avoid the use of irritating soaps and skin care products. Avoid squeezing acne, ensure adequate sleep, and live a regular life. 2. Diet: Eat more fresh vegetables, fruits, less spicy stimulation, less fat, and sugary foods. 3. medication: you can use topical retinoic acid ointment, benzoyl peroxide and other drugs, can improve local keratinization, dissolve acne, eliminate symptoms. It is recommended to first go to the hospital to confirm the diagnosis of drugs need to be used under the guidance of a professional doctor.