Oral fire produced ulcers, the first thing you should do is to regulate the mind, maintain a good mood, and local drugs can be used to promote healing. Commonly used drugs are watermelon cream spray, stomatitis spray, if there are local irritants should be removed in a timely manner, such as ulceration near the surface of the residual roots, crowns or bad restorations, or local sharp tips, dental calculus, etc., should be removed in a timely manner. After removing the irritating factors, the ulcers can quickly heal themselves. In addition, if the oral surface ulceration is more serious and the pain is more severe, you can choose to use 2% lidocaine or 1% procaine or 0.5% dacronine on the surface, which can have the effect of pain relief, and then can be conducive to eating. There is also the option of using laser or physical therapy on the surface, which can promote healing. If the ulceration is more serious, it produces fever or the phenomenon of mild shock, it is recommended to timely rehydration therapy.