Inside the mouth rotten white very painful maximum may be suffering from a mouth ulcer, can be sprayed in the ulcer local watermelon cream spray, open throat sword spray, metronidazole film, trimethoprim ointment to anti-inflammatory, pain obvious can use lidocaine gel or procaine gargle solution rinse mouth. People with frequent ulcers in their mouths indicate a lack of vitamins and trace elements in their bodies, so they can take vitamin C tablets, vitamin B tablets, iron and zinc gluconate oral solution to reduce recurrent ulcers. At the same time, you should eat a light diet and eat more fresh vegetables and fruits such as cherries, grapefruit, oranges, kiwi and dragon fruit. In addition, you should maintain a regular work and rest schedule, avoid staying up late, and people with immune disorders can use pidomod, injectable transfer factor, thymidine and other immunity-boosting drugs.