Clinically, aspirin needs to be stopped seven days before surgery, because surgery is a kind of trauma to the human body, and some blood will definitely be lost during the operation. The main role of aspirin is to inhibit platelet aggregation and play an anticoagulant role. If you do not stop using aspirin before surgery, heavy bleeding can easily occur during surgery and is very difficult to control. If the patient’s family members have a history of bleeding and thromboembolism, if the patient has had a tendency to bleed due to blood transfusion, such as surgery, menstruation with severe bleeding, if the patient is injured in life is very prone to subcutaneous petechiae, and if the patient often drinks too much alcohol in life, the doctor should be informed before surgery to prevent unexpected uncontrollable situations during surgery.