The incision in the mouth after surgery, relative to the complex environment of the oral cavity, will have a higher probability of infection after surgery. So it is especially important to keep the oral cavity clean. The first three days of cold liquid food, equivalent to the temperature of tap water, too high a temperature is likely to cause bleeding. This includes sweet milk, soy milk, juice, rice soup, etc. After three days, the temperature can be gradually increased and gradually transitioned to semi-liquid, including thin rice, rotten noodles, meatloaf soup and so on. Normal diet can be gradually resumed only after one week. Eat as much as possible at each meal to reduce the number of meals. Gargle with cool white water after meals, or gargle with the mouthwash prescribed by the doctor according to the situation, but do not use it frequently, let alone gargle for a long time, the frequent use of mouthwash also has a negative side to the wound. The stitches in the mouth do not need to be removed. After a week, you can try to brush your teeth with a child’s toothbrush.