Patients with tooth inflammation can not be extracted, the reasons are mainly poor anesthesia, hemostatic difficulties, local infection, as follows: First, poor anesthesia: clinically, before extracting the tooth, usually to carry out local infiltration anesthesia, when the tooth is inflamed, the root of the tooth around a large number of inflammatory exudate, or even pus, anesthesia drugs are difficult to completely penetrate into the periapical area, resulting in poor anesthesia, resulting in a relatively serious pain during the Relatively serious pain occurs during anesthesia. Second, hemostatic difficulty: when the tooth is inflamed and extracted, it is easy to induce hemostatic difficulty after extraction, resulting in continuous blood seepage from the extraction socket. Third, local infection: tooth extraction when the teeth are inflamed, it is very easy to cause local infection in the extraction wound after tooth extraction, and serious symptoms will trigger a series of relatively serious postoperative complications such as dry socket disease.