The red, swollen and hard pimples on the chin hurt when pressed, and are considered to be secondary infections of acne, which can be regulated by general treatment, medication, surgery and other measures. 1. General treatment: keep the skin clean and hygienic, eat a light diet, avoid extrusion, drink more water, eat more vegetables, do not eat fried, pickled food, quit smoking and alcohol, live and eat regularly, avoid staying up late and tired. 2. Medication: Erythromycin ointment, fusidic acid cream and other antibiotic medication can be used during the acute stage of inflammation, and after the inflammation subsides, Vitamin A cream, benzoyl peroxide gel and other medications can be used. 3. Surgical treatment: If an abscess is formed and there is more pus, surgical incision and drainage can be taken. If you have a red, swollen, hard pimple on your chin, it is recommended that you go to the hospital for further examination to confirm the diagnosis, and follow the doctor’s instructions for treatment, do not self-medication.