Two extractions generally need an interval of about 7 days, the recovery needs to be extracted on the same side of the tooth can be spaced 3 to 5 days, postoperative infection should be infected after the subsidence of the infection and then extracted, it is recommended that the specific circumstances to the hospital in a timely manner to check and counseling. 1. Routinely, after the first extraction, the next tooth should be extracted at an interval of about 7 days, especially if the next extraction is on the opposite side of the tooth, because generally, the affected side can chew in about 7 days to ensure that one side is used for eating. 2. If the next extraction is also to extract the same side of the tooth, this time after the extraction of the patient’s recovery is good, there is no postoperative infection and obvious pain phenomenon, you can interval of 3 ~ 5 days to extract the tooth. If there is localized infection or postoperative pain after the extraction of the affected tooth, it is recommended that the patient be treated with anti-infection first, and then the next tooth can be extracted after the inflammation subsides.