There are still many factors that contribute to the development of mouth ulcers in children, and it is necessary to carry out medication according to different causes, as well as pay attention to home care. Mouth ulcers can be treated with different medications depending on the cause. For infants, oral candida infection is not uncommon, and the common “thrush” is the most common oral ulcer disease caused by candida infection. For this disease, you can directly use sodium bicarbonate solution and saline in the mouth in a certain proportion and then rubbed, can be effective in treatment, and some other preparations can also play a therapeutic role. Oral herpes can also cause ulcer problems, and the main treatment in this case is antiviral therapy. Some bacterial infections can also cause mouth ulcers. The mouth is a good place for Gram-positive bacteria and anaerobic bacteria to grow, so care should be taken to maintain oral hygiene, pay attention to cleaning and rinsing the mouth after meals, and use medication if necessary. Medications have side effects and need to be treated under the guidance of a doctor. During the occurrence of mouth ulcers, you must pay attention to oral hygiene, you can use mouthwash for oral rinsing, and pay attention to gentle movements when brushing teeth. Do not give your child spicy and acidic stimulating foods. Avoid painful discomfort caused by the stimulation of food. Your child’s food should be made finer and avoid some rough and hard textured foods which can aggravate the ulcer wound. During the period of mouth ulcers, children must choose different medications and pay attention to home care according to different conditions due to the need for recovery of the wound.