If a small child has herpes on their lips, the first thing to consider is oral herpes caused by a herpes simplex virus infection. This is a viral infection that is mainly caused by the fact that small children may be infected by other people. When oral herpes occurs, antiviral treatment is needed. You can feed your child antiviral medications such as Blue Scutellaria Oral Liquid and Banlangen, and be sure to drink plenty of hot water to promote the expulsion of the virus. Generally, when herpes is formed, you can apply acyclovir ointment locally, and after herpes rupture, you should keep the local area dry and clean, you can apply chlorhexidine mouthwash to wipe locally to keep clean, and herpes will usually heal in about 1-2 weeks.