Rational drug use is a global concern. As one of the highest risk groups for drug use, children's rational drug use has always been concerned. Based on the previous research results of the research group, we developed evaluation indicator systems for assessing rational drug use to treat community-acquired pneumonia and primary nephrotic syndrome in children and proton pump inhibitors in pediatric intensive care units and finished empirical research. This study further summarizes and expounds the construction ideas of rational drug use evaluation indicators for children based on diseases or drugs, and provides a reference for constructing children's rational drug use evaluation indicators.