If the thin white skin falls off the inner wall of the mouth, if it is not accompanied by any discomfort, it is usually considered as the process of metabolism of the oral mucosa, which is a normal physiological phenomenon, so there is no need to worry too much. Daily attention to rest, appropriate water, supplement vitamin C can be. If, in addition to the thin white skin off the inner wall of the mouth, accompanied by other uncomfortable symptoms, then consider the disease may be related to the clinical common such as oral ulcers, thrush, aspergillosis, etc., can cause this phenomenon. 1, oral ulcers: can be manifested as the thin white skin off the inner wall of the mouth symptoms, usually ulcer sites will be accompanied by obvious pain, some patients can also be accompanied by fatigue, low fever, pain and other symptoms. In this regard, we need to pay attention to maintain oral hygiene, light diet, eat more fruits and vegetables, generally can be self-healing. Severe cases can be treated with topical application of lidocaine gel, mouth ulcer dispersion and other drugs under the guidance of professional doctors. If the ulcer recurs several times, you can also combine the application of immune preparations, vitamins and other drugs for systemic treatment; 2, thrush: generally caused by oral Candida albicans infection of the oral mucosa inflammation, also known as snow mouth disease, the oral lining can appear curdled white membranous material, patchy, resulting in the phenomenon of thin white skin off. The disease occurs in infants and immunocompromised people. Patients may have localized pain and burning sensation with dry mouth, and infants may show irritability and crying. It is usually treated with antifungal drugs under the guidance of a doctor, and fluconazole is commonly used clinically to kill Candida albicans. Daily need to pay attention to keep the oral cavity clean, prevent cross-infection; 3, aspergillosis: can be manifested as oral mucosa blisters, ulcers, resulting in patients with the symptoms of the oral cavity lining off thin white skin. Patients can be treated with prednisone, cyclosporine, morte-macrolimus and other drugs as prescribed by the doctor according to the specific situation. If the treatment is not effective or if there are repeated relapses, plasma exchange or bone marrow transplantation may also be used. In addition, if you have aspergillosis, aspergillosis-like lichen planus, etc., you may have a thin white skin falling off the lining of the mouth. So if there are other uncomfortable symptoms, it is recommended that patients go to the hospital in a timely manner, to clarify the cause and actively carry out targeted treatment to avoid aggravation of symptoms.