A swollen bag of tooth flesh may be caused by wisdom tooth pericoronitis, gingival fistula, periodontal abscess and so on. 1. Wisdom tooth pericoronitis: the wisdom tooth position is not right, when the oral cleaning is not in place or the body’s resistance decreases, there will be an acute attack of pericoronitis, a swollen bag of flesh, pericoronary pus, and so on. 2. Gingival fistula: teeth appear apical periapical inflammation is not treated in time, will make the inflammation along the gum mucosa to the outward discharge of pus, gingival fistula, manifested in the flesh of the teeth swollen bag. 3. Periodontal abscess: periodontitis is not timely treatment, will make the inflammation further development of the formation of periodontal abscess, resulting in periodontal pus overflow, the emergence of dental meat bag. Do not blindly deal with the swelling after the tooth, so as not to cause infection, and so on, to the hospital in time, so as not to delay the condition.