After tooth extraction, it usually takes 2-3 hours before you can eat or drink, which is safer and less likely to lead to post-extraction bleeding and hematoma. The precautions after tooth extraction include the following: 1. After tooth extraction, you need to bite a clean cotton ball for 30 minutes to one hour at the location of the extraction wound for pressure to stop bleeding; 2. You can eat and drink water 2-3 hours after tooth extraction, and at this time, you should try to eat with the non-extraction side of the tooth, otherwise it is easy to lead to post-extraction hemorrhage and hematoma, and you can only eat warm, cool, thin and soft food, not spicy and stimulating food; 3, You can’t brush your teeth or rinse your mouth within 24 hours after tooth extraction, otherwise there is a possibility of bleeding and hematoma after tooth extraction; 4. Keep your mouth clean after tooth extraction to prevent the possibility of infection after tooth extraction.