Swollen gums cannot usually be pierced on their own. If the gums are congested and swollen due to inflammation of the gums and cannot be pierced, you can remove plaque and food debris from the root area by careful brushing and apply iodized glycerin to the swollen area, which is usually effective in relieving the inflammation. When apical periodontitis occurs, the bacteria in the pulp cavity will spread to the surrounding tissues of the root tip through the apical foramen, resulting in gum abscess, which should not be punctured without authorization, so as to avoid further aggravation of the infection caused by improper disinfection, or the pus pooled again to cause recurrent episodes, and then should be incised and drained, and endodontic treatment should be carried out to control the inflammation. When the gums are swollen, the cause of the swelling should be clarified in a timely manner, and standardized treatment under the guidance of the doctor. Can not be pierced or other unauthorized disposal.