PURPOSE: This study was intended to develop the framework of public health center based 'Child growth and developmental clinic' and analyze the efficiency of services. This was the part of Mother-Child Health Guidance Project by the Public Health Center in Seoul. The purposes of this project were to improve children's health and development with early detection of developmental delay by screening test, and to assist and guide the parent for child care and rearing, so that children can reach their maximum potential. METHODS: Framework and standards for operation of 'Child growth and development clinic' were developed. We selected screening tool, developed parent education materials, and educated the personnel of public health center. RESULTS: 243 children were enrolled for developmental screening, and we detect the children with developmental delay and referred them for further evaluation. The proportion of developmental delayed children was approximately 2% of the enrolled children. Also, we analyzed the characteristics of enrolled children, and their parental needs and attitude on child rearing. Some problems in operation of developmental clinic were discussed. CONCLUSION: Though we can found some limitations, we are confident that pubic health center can be charge of important role for improving child development for the majority. This study will be the basis of children's developmental clinic running by public health center.