Medical Health IC card is a smart card built-in a microprocessor and a memory that stores individual health care information. The card is carried by the individual and presented to the medical doctor whin needed. Being connected with the existing networks, the card enables full automation of hospital management and formation of complete medical databases. Futhermore, the card links hospitals with nation-wide medical networks. The focus of this study is on what data should actually be stored in the card, and how the card to be used effectively in maternal-child and school health service. In this paper, existing literatures about prenatal care using medical health IC card were reviewed. and standardization efforts of medical IC card conducted by the ISO and Japanese Department of Health and Welfare were analyzed. This allowed us to pick the most suitable items based on the actual situation in Korea and how to systematically collect and record such data. As a result. we were able to present a standard that follows international standards and includes all additional information from maternal-child health care in major Korean hospitals, child health record published by the Korean pediatric society, and physical examinations done in elementary, middle and high schools in Korea. Also, The terminology of each item was standardized conforming to the Korean standard medical terminology.