The main precautions after tooth extraction are as follows: First point, brushing and rinsing are prohibited within 24 hours to avoid bleeding from the extraction wound due to the dislodging of blood clots caused by brushing and rinsing. Secondly, it is necessary to bite cotton ball or gauze for 30-40 minutes after the operation to stop bleeding by pressure. The third point is that you can eat only after two hours. You can eat warm, cool and soft food and avoid overheating diet and chewing on the extraction side to prevent bleeding. The fourth point is that smoking, repeated sucking and tongue licking of the extraction wound are prohibited. Fifth point, if there is a small amount of blood in the mouth within 24 hours, it is a normal situation. If there is a large amount of blood, it is necessary to see a doctor promptly to stop the bleeding. The sixth point is that if the extraction wound is sutured, the stitches need to be removed within 5-7 days.