Although tooth extraction is a minor surgery, it can cause some trouble if you don’t pay attention to protect the incision of tooth extraction. So what issues should be noted after tooth extraction? 1. The cotton roll placed in the patient’s mouth by the doctor should be gently bitten and spit out only after 30 minutes; 2. Don’t talk and laugh loudly on the day of tooth extraction, and don’t spit or spit hard, and don’t lick the incision with your tongue, and don’t suck the incision to avoid bleeding caused by negative pressure, and don’t touch it with something like fingers or toothbrush. Do not eat food that is too hot or too hard, do not drink strong wine, do not smoke, do not eat spicy food; 3. Do not rinse your mouth within 6 hours, otherwise it may cause re-bleeding or inflammation of the wound, after 6 hours you can gently rinse with warm salt water. You can brush your teeth the day after extraction, but you should also be careful not to let the toothbrush touch the trauma; 4. Within 20 hours, there may be a small amount of blood in the saliva, which is normal and should not be afraid. Even if there is a lot of bleeding, do not panic, immediately find a piece of sterilized gauze and put it on the bleeding trauma and bite it, then go to the hospital for emergency treatment; 5. On the day of tooth extraction, there should not be excessive activity; 6. According to the need of the situation, you can go to the hospital for a review once on the next day; 7. If the trauma of tooth extraction is sutured, usually go to the hospital for suture removal 5 to 7 days after tooth extraction.