Under normal circumstances, the best time to extract wisdom teeth is between the ages of 18 and 25. The exact timing of extraction needs to be determined in conjunction with the actual situation of the patient. Because the human body is still in the eruption and growth period between the ages of 18 and 25, wisdom teeth are more likely to be blocked, resulting in frequent oral inflammatory diseases, such as pericoronitis and pulpitis. Therefore, wisdom tooth removal treatment at this time can effectively reduce the occurrence of oral inflammatory diseases. In addition, at this stage, the immune system of human body has stronger resistance function, and after receiving wisdom tooth removal surgery, the local adverse symptoms are less reactive, which is more conducive to the rapid recovery of the body and reduce the risk factor of postoperative infection. However, if the patient’s wisdom teeth already have caries, pulpitis or other dental diseases, it is necessary to receive extraction treatment as soon as possible to avoid secondary infection to the surrounding dental tissues, which may lead to more serious consequences. In the postoperative diet and life care, we should try to choose liquid and low residue food and strengthen oral cleaning care to avoid postoperative infection.