1. After tooth extraction, bite the sterile gauze pressed on the wound to help stop the bleeding. It should be insisted for 60 minutes before spitting out, do not bite too tightly or bite for too long. 2. Do not rinse your mouth and brush your teeth within one day after tooth extraction, and take rest in semi-recumbent position after tooth extraction, do not lie flat, and do not take a hot bath immediately to avoid bleeding from the trauma. 3. Do not use anything (such as toothpicks) to pick the wound at the extraction site to avoid bleeding or infection. 4. After tooth extraction, please spit less and gently swallow the saliva in your mouth and do not lick the wound with your tongue. If the saliva contains a small amount of light red blood, there is no need to panic. If there is too much blood or blood clot, you can come to the hospital at any time to stop the bleeding treatment. 5. It is a good phenomenon if a dark red blood clot is found to form on the inside of the wound. 6.The day after tooth extraction, if you feel that the wound is fine and there is no uncomfortable feeling, you can not come to the hospital for follow-up; if you have uncomfortable feeling, you must come to the hospital for follow-up. 7. You must fast within 2 hours after tooth extraction. 2 hours later you can eat, and it is appropriate to eat warm, cool and soft food. The 2 to 3 days after the operation should also be diluted and soft, generally 3 days later you can eat normally, and a week later you can resume chewing on the affected side. 8. After the effect of anesthesia wears off, the extraction wound is slightly painful and generally does not require medication. 9. If there are sutures in the wound, the sutures can be removed generally in 5-7 days, or the surgeon can arrange the removal time. 10. Except for wisdom teeth and multiple teeth (having more than the regular number of teeth in the mouth), adults generally need to install dentures after tooth extraction, and can go to the hospital for installation about 3 months after extraction.