After oral cancer surgery, it is necessary to pay attention to patients’ diet, wound care and corresponding treatment for postoperative complications. 1. Diet: After oral cancer surgery, patients should maintain a light, high protein, low fat, low salt and nutritionally balanced diet, and eat more vegetables and fruits rich in vitamin C, vitamin A and other nutrients, such as carrots, apples, green vegetables, oranges, kiwi and so on, which can strengthen the body quality and be conducive to the recovery of the patient’s body. 2. Wound care: patients should keep their wounds hygienic and dry after surgery, and sterilize the affected area regularly to prevent wound infection. Saline or mouthwash can be used to clean the mouth every day to keep the mouth clean. 3. Complications: wound infection is a common complication after oral cancer surgery. If the wound is infected, patients can use anti-infective drugs as prescribed by doctor, for example, patients with bacterial infection can take antibiotics such as cefuroxime sodium tablets and amoxicillin capsules orally for treatment. After oral cancer surgery, patients are advised to take good care of themselves, and if abnormal symptoms occur, it is recommended to consult doctor as soon as possible. Please strictly follow the doctor’s prescription for medication and do not use medication by yourself.