The white membrane begins to fall off after tonsil surgery in about a week in most cases, and in a few patients it may take 2 to 3 weeks. A white membrane, also called postoperative pseudomembrane, will form 6 to 12 hours after tonsillectomy, and this is a normal physiologic phenomenon. The white membrane has a protective effect on the wound. Therefore, in the process of shedding, do not eat hard food, do not pick out the white membrane, so as not to cause serious bleeding. This layer of white membrane usually in the wound healing process of 5 ~ 6 days began to gradually fall off. In some patients, due to sore throat, not talking, irregular diet and other reasons, may lead to prolonged shedding of the white membrane, some may reach about two weeks after the operation before it begins to fall off. Usually, this white membrane can be completely shed in 2 to 3 weeks after surgery. Therefore, after the operation, follow the doctor’s instructions to eat and drink, and wait for the leucoplakia to fall off naturally, and if you have any throat discomfort, you need to consult a doctor in time.