High blood pressure is a relative contraindication to tooth extraction, generally stipulated that diastolic blood pressure above 100mmHg or systolic blood pressure above 180mmHg, either condition is satisfied, then this kind of patients are not recommended to remove the teeth immediately. 1, because high blood pressure will cause blood flow to accelerate, and this time to remove the teeth may cause extraction of trauma bleeding more or more than the bleeding of the case, so for high blood pressure patients, should If high blood pressure occurs before tooth extraction, it is recommended to take the corresponding antihypertensive medication before extraction, and in the process of extraction, it is recommended to give the patient timely cardiac and blood pressure monitoring, under the supervision of the tooth extraction, the risk will be smaller.