Generally, you should not smoke just after tooth extraction, as it is easy to aggravate the bleeding of the wound and affect the postoperative recovery. You should also avoid rinsing, brushing and drinking alcohol on the day after surgery. Tooth extraction is an invasive treatment technology, in general, just after the extraction of teeth is not allowed to smoke, mainly because the process of smoking need to constantly do the sucking action, to a certain extent, it will make the blood clot off, and then aggravate the bleeding of the extraction wound, resulting in the second seepage of blood. Harmful substances in tobacco can irritate the wound and increase the chance of infection and dry socket, which to a certain extent will easily affect the postoperative recovery. In addition to not smoking, you should not rinse your mouth, brush your teeth, drink alcohol, or eat spicy, stimulating, too hot, too hard food, and it is recommended that you use the side of the tooth that has not been extracted to chew your food, or else it will cause the wound to bleed. To summarize, patients who have just had their teeth extracted need to strengthen oral care, follow the doctor’s instructions to take medication on time, and go to the hospital regularly for follow-up.