In life, the patient’s throat long white things, can be divided into many kinds of situations: the first situation, the most common is the patient’s body resistance is relatively poor, tonsils always inflammation will lead to the formation of scar, sometimes white, the patient will not have obvious discomfort. In the second case, the patient has not rinsed his mouth after eating, and there are food residues on the base of the tongue or in the pharyngeal cavity. In the third case, it is mainly considered that the patient’s body lacks vitamins, which leads to the formation of ulcers in the mucosa of the pharyngeal cavity, and the patient will be more painful. In the fourth case, it is considered that the patient’s tonsils are suppurating, and many white pus mosses are formed on the surface of the tonsils, or a white pseudomembrane is formed in the tonsillar fossa after tonsillectomy, which mainly protects the surgical area.