The white film that comes off the inner wall of the mouth may first be due to bite wounds, or eating hard food that damages the mucosa, causing local necrosis and shedding, which can usually heal on its own, and it is recommended that the intake of a warm, soft, easy-to-digest diet is the main focus. The white film shed on the inner wall of the mouth may also be a disease factor, commonly found in the following cases: 1, common causes 1, oral ulcers: due to poor health, paranoia, mood swings, as well as genetics, injury and other factors, patients can be in the inner lips, palate, cheeks, tongue and other parts of the mucosa appear round or oval ulcers, can be formed by fibrin, necrotic cells, inflammatory cells and other substances such as pseudomembranes, is White or yellow-white; 2, bacterial infectious stomatitis: common pathogenic bacteria such as Staphylococcus aureus, pneumococcus, streptococcus, etc. The human mouth will normally exist a certain number of bacteria, the flora is a balanced state. However, colds, fever, long-term use of antibiotics, chemotherapy, radiation therapy and other conditions can cause a decrease in immune function, when the bacteria are active and multiply, causing stomatitis. Often in the tongue, inner lips, cheek side mucosa and other parts of the mucous membrane edema, gradually developed into erosion and ulcers, aggregation and fusion can be seen on the surface covered with grayish-white pseudomembrane, timely erase or fall off, but also will soon be covered again; 3, thrush: also known as acute pseudomembranous Candida stomatitis, snow mouth disease, is caused by Candida infection of the mucous membrane disease, with oral mucosa white membranous as the typical performance, can appear in the cheek It can appear on the buccal mucosa, palate, tongue surface and other parts. It is common in infants and young children, immunodeficient people and patients with long-term hormone therapy. If the white membrane is forcibly torn away, it is easy to cause basal bleeding; 4. aspergillosis: it is an autoimmune skin disease, which is related to the loosening of the skin surface. Common cause is the autoimmune system disorders, may also be certain drugs such as captopril, rifampin, etc., long-term application of the oral lining induced by white film shedding; 5, oral lichen planus: belongs to the oral mucosa chronic inflammatory diseases, the disease although the cause is unknown, but also some triggering factors to make patients appear oral lining white film shedding, such as endocrine, infection, genetic, mental, immune and other aspects. Second, treatment 1, oral ulcers and bacterial infectious stomatitis: commonly used vitamin C, chlorhexidine solution, procaine solution, lidocaine gel, etc. for antibacterial treatment; 2, thrush: patients need to take oral mycoplasma, fluconazole and other drugs for antifungal treatment under the guidance of a doctor; 3, aspergillosis: common local wipe with saline, and then follow medical advice to take drugs, including glucocorticoids such as prednisone, hydrocortisone. Immunosuppressants are also taken and used when glucocorticoids are not effective, such as methotrexate, cyclophosphamide, cyclosporine, etc. If necessary, the choice of biological agents and sedative injection of human blood C immunoglobulin, as well as the treatment of Reglan; 4, oral lichen planus: the need to first soothe the patient’s mood and spirit, while checking the oral local stimulation, to reduce discomfort. In addition, take medication as prescribed by the doctor, including vincristine ointment, adrenocorticosteroids, antifungal drugs, and glucocorticoids, etc. Third, precautions recommended that patients go to the hospital in a timely manner to clarify the cause, under the guidance of the doctor for the cause of treatment, do not arbitrarily use drugs, pay attention to the diet light during treatment.