Tooth extraction is an invasive minor surgery, and general tooth extraction surgery does not require hospitalization, but there are some patients who need to be hospitalized if the tooth is deep, completely bone buried, or near important anatomical structures, such as very close to the maxillary sinus, close to the mandibular nerve canal, and the tooth is low obstructed. There are also some elderly patients with some other diseases, hypertension, endocarditis or basic metabolic diseases, and such patients with poor conditions themselves are recommended to be hospitalized for extraction when multiple teeth are to be extracted at one time, because inpatient extraction can be performed under general anesthesia, which reduces the pain of patients and is easier for them to accept.