1. First of all, it is crucial to be calm and listen carefully to the doctor’s explanation after the tooth extraction, which is very important. 2. It is best not to eat for 2 hours, and to eat soft, liquid or semi-liquid food on the same day, with warm and cold food, not too hard or too hot food. Chewing can be done on the other side. 3. Do not rinse your mouth and do not spit much on that day to prevent bleeding or infection. Do not suck and spit out the blood clot repeatedly because of the smell of blood in the mouth, which will not heal the trauma. 4. Do not brush your teeth on the same day. Do not suck on the trauma. Do not blow the instrument. 5. Within 1 week after tooth extraction, it is normal to have blood in the mouth. If there is more than bleeding, go to hospital for examination. 6. Try to exercise less and talk less on the day of tooth extraction. Avoid smoking, alcohol and spicy food. 7. If there are sutures in the mouth when the tooth is extracted, generally the sutures can be removed only after 4~5 days. 8. After tooth extraction, attention should be paid to the incision, and if there is a lot of bleeding, you should seek medical examination in time. The gauze or cotton ball on the incision after tooth extraction should be bitten for about half an hour before spitting out, do not bite too tightly or bite for too long. a small amount of blood in the saliva within 24 hours is a normal phenomenon. 9, general extraction can be done without oral conventional antimicrobial, if the extraction of wisdom teeth or traumatic teeth must be oral antibiotics, symptoms aggravated can be intravenous infusion of antibiotics. 10. It is recommended to use the special natural mouthwash – rinse tea supplied by our department on the day of routine tooth extraction, five milliliters of the original solution is contained in the mouth for five minutes, and then spit out, after spitting out without cleaning the mouth with water, it can be repeated several times a day, and can continue to use to rinse the mouth since the second day, which can reduce the postoperative reaction. 11. Except for the 3rd molar and multiple teeth, generally adults need to be fitted with dentures after tooth extraction, and about 2 months after tooth extraction should be set (except for the blocked teeth) in order to avoid the collapse of neighboring teeth. 12.After tooth extraction, it is advisable to rest in semi-recumbent position, not lying flat, and not to take a hot bath immediately to avoid bleeding from the incision.