If an ulcer appears inside the mouth of a very young child, it generally needs to be considered from two aspects: 1. Simple mouth ulcers. If you spray the children’s mouth with a local spray, mouthwash, and a balanced diet and nutrition, it will heal within two weeks. 2, the oral ulcers of children may also be a late symptom of herpes virus infection. The actual fact is that you can find a lot of people who are not able to get a lot of money for the actual money. Children should mainly take Baicalin Oral Liquid or Banlangen or Pu Di Lan for antiviral treatment, and after the blisters rupture to form ulcers, topical medication can be applied, and it usually takes about two weeks to heal. If a child has ulcers in the genital organs and eye problems in addition to mouth ulcers, it may be a mouth-eye-genital syndrome, which requires systematic systemic treatment.