Smoking is not recommended on the second day after wisdom tooth extraction because there is a repeated sucking action, which can easily dislodge the blood clot in the extraction socket or even cause the extraction socket to ooze blood, and the ingredients in tobacco can also easily cause infection of the blood clot in the extraction socket. The blood clot in the extraction socket is the basis for the new healing of hard and soft tissues. Once the blood clot is dislodged and infected due to smoking, it will cause obstacles to the formation of new tissues, leading to severe pain caused by the emptiness of the extraction socket, and even triggering the undesirable postoperative reaction of dry socket syndrome. Therefore, it is not recommended to smoke the day after wisdom tooth extraction, and it is also recommended to quit smoking as soon as possible from the perspective of general health.