First of all, before preparing for the operation, we should do a physical examination to ensure good health and no inflammation and infectious diseases.

Secondly, do not take aspirin-containing drugs 2 weeks before the operation, because platelets will reduce their coagulation function under the action of aspirin.

Thirdly, if the patient suffers from hypertension or diabetes, he should tell the doctor truthfully at the first visit so that the doctor can determine the relevant surgical plan.

Fourth, women should avoid public holidays when undergoing surgery, and men should quit smoking one week in advance.

Fifth, don't put on makeup before preparing for the operation.