Red and swollen pimples on the chin are clinically known as acne, which is related to localized Propionibacterium acnes infection and inflammatory reaction, and can be treated with topical medications, oral medications, and daily protection. 1. Topical medications: Benzoyl peroxide, fusidic acid, etc. can be used externally, which has good antibacterial effect and can reduce the local inflammatory reaction. 2. Oral medication: If there is a lot of redness and swelling of acne, you need to take oral antibiotic treatment, and you can use tetracycline antibiotics, such as minocycline. 3. Daily protection: daily need to maintain adequate rest, avoid staying up late, regular work and rest, reduce greasy, high sugar and other food intake, which can aggravate acne, need to be balanced and light diet, and do a good job of cleansing and skin care. The use of the above medication should be in accordance with medical advice, treatment should be carried out under the guidance of a physician, red acne timely to the hospital, early treatment, to avoid leaving scarring and coloration.