We have developed a combined Kampo medicine information database system. The database system comprises contains Kampo medicine products information database and a crude drugs information database. In the former, information on component crude drugs and their contents and safety is unified in a relational database for each product and compared with each other within a given Kampo formula by display scrolling. In the latter, information on application, indications, constituents, dosage and other data, is separately obtained for each crude drugs.