The description of a fleshy bag growing next to a decayed tooth is not very exact. First of all, it is recommended to go to the stomatology department of local hospital or dental clinic to check the specific situation, and then treat it symptomatically. The common clinical cause of this kind of decay is tooth decay, i.e. decayed tooth, and further development of decayed tooth will form pulpitis and even periapical inflammation. Further development of periapical infection at the root tip may break through the alveolar bone and form a fistula in the gum area of the corresponding tooth, which also looks like a flesh bag and may have a purulent secretion overflow. In this case, it is necessary to treat the tooth and perform a complete root canal treatment. At the same time, it is possible to consider scratching the fistula to reduce it further or even make it disappear, and then perform a complete root canal treatment. It is recommended that this tooth be restored with a crown to protect the crown and to protect the tooth so that it will serve us for a longer period of time.