After wisdom tooth extraction, it is recommended not to drink alcohol for a week because the wounds of the extracted teeth are very fragile areas, and alcohol can easily stimulate the wounds because of its high degree, and even cause the wounds of the extracted teeth to bleed more than once because alcohol has a certain effect of activating the blood. After drinking alcohol, some patients have high blood pressure and may suffer from bleeding, which is difficult to handle even in the hospital and can be life-threatening. Patients should try not to drink alcohol and smoke within a week after tooth extraction because smoke can also stimulate the infection of the extraction wound and smoking is a sucking action that can easily lead to bleeding in the extraction socket. It is better for patients to quit these two bad habits before having their wisdom teeth extracted. After wisdom tooth extraction, it is important to prevent infection of the incision, because infection can cause severe pain and is troublesome to deal with.