Pain relieving drugs can be used for mouth sores. Commonly used drugs include 1% procaine or 2% lidocaine, which can be applied to the ulcer using a cotton swab dipped in a small amount of the drug to provide anesthesia and pain relief. In addition, the larger the wound can choose to use, to promote healing drugs, commonly used are prednisolone suspension, can be injected locally in the submucosa, can quickly promote healing. For regular, small ulcers, you can choose to use trenbolone ointment, or choose to use tablets containing cetiolone, which can have the effect of promoting ulcer healing. For heavy mouth sores, you can also use aerosol medications, such as watermelon cream spray or stomatitis spray or open throat sword spray, which are recommended to maintain oral hygiene. If there is calculus in the mouth or a large amount of caries in the mouth, restorative treatment should be done in a timely manner. It is recommended that teeth be cleaned once every six months to a year or so, which can help oral hygiene and avoid recurring mouth sores.