Children’s mouth ulcers, also known as recurrent mouth sores, can be relieved through general treatment, medication and other ways. 1. General treatment: children always have mouth ulcers, in life should pay attention to oral hygiene, rinse the mouth in time after eating, food debris in the mouth breeding bacteria, diet to light food, avoid eating spicy, stimulating food, eat more fresh vegetables and fruits. 2. Medication: patients can use external rinses under the guidance of doctors, such as chlorhexidine gargle, esacridine liquid, etc.; tablets, such as cediriodine tablets, etc.; you can also use proprietary Chinese medicines, such as Qingdai powder, ice boron powder, watermelon cream spray, etc., for treatment and symptomatic relief. It is recommended that patients strictly follow the doctor’s instructions for medication, actively cooperate with the doctor’s treatment, pay attention to observe the affected area in life, if the condition continues to worsen or other uncomfortable symptoms, should promptly seek medical attention.