Mouth ulcers are common oral diseases. The long-term appearance of mouth ulcers in women may be related to physiological factors, such as the preference for spicy, too acidic, too hard, too hot food, etc., resulting in more difficult recovery of the ulcer surface, which can usually be improved after adjusting the diet. In addition, long-term female oral ulcers, but also the following conditions: 1, recurrent aphthous ulcers: the disease may be related to immune abnormalities, genetics and digestive disorders and other factors, often manifested as round or oval ulcer lesions, the surface is red and swollen and accompanied by burning pain, can be recurrent, usually can be used sodium bicarbonate solution, chlorhexidine, etc. for gargling, with painkillers such as procaine for local application The pain is usually treated with local application of analgesics such as procaine. Under the guidance of doctors, choose to use drugs, or laser, ultraviolet radiation treatment, etc.; 2, traumatic oral ulcers: usually due to residual roots and crowns, bad restorations and cheek and lip biting and other bad habits. It is possible to gargle through the drugs such as ezacrine and compound boric acid solution, and patients with heavy ulcers can choose suitable antibiotics according to medical advice. If it is caused by residual roots and crowns, bad restorations, etc., the corresponding residual root extraction and crown repair can be carried out; 3. Leukoplakia: patients can have long-term episodes of oral ulcers, which can be accompanied by genital ulcers, ophthalmia, etc., and can involve multiple systems throughout the body. Usually suitable medication, medicinal flushing and systemic treatment are selected according to the lesion site. Long-term mouth ulcers in female patients may also be associated with excessive mental stress, low immunity, and special periods such as pregnancy. If it has lasted for a long time and there are other symptoms such as fever, you should visit the hospital in time to avoid other complications or delayed treatment. Keep your mouth clean in daily life and eat as lightly as possible to avoid irritation of the oral mucosa.