After the tooth extraction, we should pay attention to observe the bleeding situation, protect the wound, pay attention to diet, prevent infection, pay attention to the time of removing the stitches, and observe whether there is any complication, etc. 1, observe the bleeding situation: don’t leave the hospital immediately after the tooth extraction, and wait until the bleeding stops completely; if there is a large amount of bleeding after going home, you should consult a doctor in time. In addition, within 24 hours after tooth extraction, it is normal to have blood in saliva; 2, protect the wound: after tooth extraction, pay attention to protect the blood clot, don’t rinse your mouth on the same day. Don’t lick the wound with tongue, and don’t suck and spit repeatedly, so as not to destroy the blood clot, which will cause bleeding; 3, pay attention to diet: you can eat and drink only after 2-3 hours of tooth extraction, and only eat warm, cool, soft and sparse food, such as fruit juice, milk, etc., don’t eat too hard, hot food, don’t use the affected side of the teeth to chew the food; 4, prevention of infection: there will be localized swelling and pain after the extraction of teeth, which will gradually ease in 3-5 days. It will be gradually relieved after 3-5 days. If the swelling persists or even worsens, attention should be paid to whether there is a local infection, which should be promptly checked and treated in the hospital. Diabetic patients, complex tooth extraction and patients with poor general condition should take antibacterial drugs under the guidance of the doctor to prevent infection; 5, pay attention to the time of removing the stitches: if the stitches are removed when the tooth is extracted, it should be returned to the hospital to remove the stitches after 7 days; 6, observe whether there are any complications: dry socket syndrome may occur after tooth extraction, which is a relatively common complication after tooth extraction, most commonly seen in the 2-3 days after the tooth is extracted, and is mainly characterized by the absence of blood clotting in the socket, corruption, foul-smelling smell, and the presence of a blood clot. Missing, corruption, bad odor, produce severe pain, can spread to the head and face, this situation should be timely medical treatment.