There is no fastest treatment for children’s rotting corners of the mouth, rotting corners of the mouth is mainly due to the lack of vitamins, diet inappropriate and caused by a comprehensive program can be taken to treat the common medication, dietary regimen treatment. 1. medication: you can spray oral ulcer powder, ice boron powder and other drugs in the place of mouth ulcers. Vitamin C, zinc gluconate oral solution and other drugs can be taken under the guidance of the doctor. 2. Dietary management: it is recommended to eat more tomatoes, grapes and strawberries and other foods rich in vitamin C, you can eat more fresh fruits and vegetables diet should be light. Try to eat less greasy food, high protein food, usually pay attention to oral hygiene, do a good job of cleaning the mouth. The causes of children’s mouth corners are more reasons, it is recommended to identify the cause of the disease, to take reasonable medication, to avoid the wrong medication.