Precautions for patients who have their teeth extracted are: (1) Before the extraction, eat a little something, not on an empty stomach, and then rinse and brush the teeth. (2) You should test your blood pressure and do procaine skin test at the nurse’s office after registration. Gao Jing, Department of Stomatology, Taian Central Hospital (3) It is better not to eat anything within two hours, and to eat soft food on the same day, warm and cold is appropriate, and you can chew on the other side. (4) Don’t rinse your mouth diligently and don’t spit much on that day to prevent bleeding or infection. (5) It is normal to have blood in the saliva within 24 hours after tooth extraction, 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, the sutures can be removed only after 4~5 days in general.