Mouth sores are painful and you can usually choose to use pain relieving medications, commonly used medications are 0.5% Dacronine solution, 1% Procaine or you can choose 2% Lidocaine to apply to the location of the mouth sores. Then you can eat, usually, can quickly play the effect of pain. In addition, you can take oral painkillers appropriately, commonly used such as ibuprofen or acetaminophen. If the mouth sores are large, it is recommended to use drugs to promote healing, which can reduce the pain. Commonly used medications include triamcinolone ointment, compound cortisol, tin powder, ice boron powder, etc. It is also recommended to improve the body’s resistance to avoid the recurrence of mouth sores. And if there is a lack of vitamins and trace elements, should be timely supplementation, to correct anemia, if there is iron deficiency anemia, you can choose to supplement ferrous sulfate.