Abstract: The present invention relates to a system for providing medical service using electronic cards and a method thereof, and in particular, to a technique which enables personal medical information to be managed by using intelligent cards. According to the present invention, personal health information is written on intelligent cards (hereinafter, referred to as IC card), and medical treatment or drug dispensing is performed by referring to health information written on the IC cards. In addition, the present invention enables hospitals and medical institutions (for example, the medical insurance management corporation or private insurance companies) to share personal health information, connected with each other through the Web. Here, personal health information is safely protected because certification procedures are performed by using IC cards among the institutions and then the information can be shared only after succeeding in certification.