The occurrence of swollen gums often causes varying degrees of disruption to patients’ lives, especially the painful symptoms of swollen gums, which can have a serious impact on patients’ daily diet and speech. Therefore, the prevention of swollen gums is one of the important steps in oral health. Preventive methods for swollen gums: 1. Pay attention to oral hygiene and develop the good habit of “brushing your teeth in the morning and evening and rinsing your mouth after meals”. 2, the discovery of tooth decay, timely treatment. 3, should not eat sugar, cookies and other starchy food before going to bed. 4.It is advisable to eat more food to clear stomach fire and liver fire, such as pumpkin, watermelon, water chestnut, celery, roca, etc. 5, avoid alcohol and hot fire food. 6.Insensitive temper and easy anger can trigger toothache, so it is advisable to be open-minded and calm. 7.Keep the bowels open, do not make the fecal poison attack. 8, do not eat too hard food, eat less too acid, too cold, too hot food.