It is normal to lose the white membrane after tonsil removal. After tonsillectomy, a white membrane, also known as pseudomembrane, is usually formed, which is a kind of cellulose exudation and has the function of preventing infection and protecting the wound. It is normal for the white membrane to gradually fall off in about seven to ten days. Normal white membrane should be grayish white, thin, smooth surface, and will gradually fall off. If the white membrane is dirty and thickened, grayish in color, and obviously accompanied by local swelling and congestion, or a bad taste in the mouth, it means that the wound may be infected, and requires timely treatment. Patients are advised not to cough hard during the treatment period, and avoid eating too hard or too hot food to avoid scratching the white membrane, which may cause bleeding in the throat. If there is an adverse reaction need to inform the doctor in time, do not hide the condition.