Babies with dental caries should actively seek medical treatment, and its specific treatment depends mainly on its severity. If it is the initial stage of caries and the tooth defect has not appeared, the further development of caries can be stopped by fluoride toothpaste or fluoride. If the caries has already formed a defect, but the tooth nerve is not involved, the decayed tissue can be removed and the filling treatment can be carried out. If the caries has developed further and the pulp has been involved, root canal treatment is needed. If the caries is very serious and the remaining tooth tissue has no therapeutic value, the tooth needs to be extracted. Therefore, if the baby has tooth decay, it is recommended to actively seek medical treatment to avoid the aggravation of the disease, and finally the affected tooth cannot be preserved. Parents should pay attention to keep the oral hygiene of their babies, and if their teeth become uncomfortable, they should actively consult the doctor.