The reasons for the swelling of the meat behind the teeth specifically include the following: 1, inflammation of the gums behind the teeth, to ensure regular brushing every day to maintain oral hygiene, and in serious cases, to go for regular dental cleaning; 2, periodontitis caused by tooth meat swelling, to do periodontal disease treatment, including scaling of periodontal disease, subgingival periodontal surface scaling, flap surgery, etc.; 3, pericoronitis caused by the meat behind the teeth swelling, most of the reasons are due to wisdom teeth Pericoronitis caused by wisdom teeth, pericoronitis is the third molar eruption incomplete or blocked when the periodontal, pericoronal soft tissue inflammation, the general treatment is to rinse with warm water or salt water, as well as with oral rinse solution rinse, rinse, and then on iodine glycerin, this situation is best to go to a regular hospital to take dental films, to determine the blocked teeth, indeed this tooth redundant, and the impact on the side of the larger, it is best to wait for the elimination of inflammation The tooth should be extracted at a later date.