When a child has mild oral ulcers, if the baby is not particularly uncomfortable and it does not affect their eating, no special treatment is needed. You can rinse with saline solution morning and evening. Avoid consuming spicy, irritating, overly hard, overly salty, or overly hot foods to prevent damage to the oral mucosa. For infants who are still breastfed, mothers should also ensure cleanliness of the breasts. Of course, if it affects eating and the baby is also crying and restless, it is recommended to go to the hospital for timely treatment. For children's oral ulcers, it is advisable to focus on prevention. Always pay attention to oral hygiene, have a reasonable diet, increase physical exercise, and enhance the body’s own resistance.