An abscess on the gums can be picked, but it should be incised and drained at the dentistry department of a regular hospital, and should not be treated on its own to avoid secondary infection. An abscess on the gums is usually a periapical abscess or cyst caused by periapical periodontitis. In the acute stage, pulpotomy should be performed to open the pulp cavity and remove the root pulp to ensure the root canal is open and inflammatory material can flow out from the root canal. In the acute abscess stage, the pus may reach the subperiosteum or submucosa, and at this time, it should be cut open in the corresponding apical area of the affected tooth, where the abscess is obvious, and drainage should be performed. After the acute remission period, root canal treatment is feasible to thoroughly remove the infected material from the root canal and fill the canal tightly for permanent treatment. If the lesion is large, apical scraping is required to eliminate the lesion in the apical region, but only for the upper and lower anterior lesions. Patients should also pay attention to a light diet in daily life, avoiding cold, spicy and other stimulating foods, and pay attention to dental hygiene, brushing at least once a day in the morning and once in the evening, and rinsing the mouth after meals.