Tooth decay next to an abscess, it is recommended to go to a professional oral health care institutions by the physician to view the differential diagnosis of the disease, generally this type of situation to determine whether the abscess and tooth decay has a direct relationship, clinically most of them have a direct relationship. At this time, the most common is tooth decay caused by pulpitis further development, the development of the root tip, the root tip of the further development of the breakthrough of the alveolar bone so that the gums above the emergence of the pustule. At this time, the treatment needs to actively treat the tooth, if necessary, open the pulp, pulp extraction, root canal treatment, etc. are perfected after close observation of the abscess, most of the teeth in the systematic treatment of the abscess will naturally dissolve.