Problem-based Learning challenges students to be more actively involved in defining what they learn and solving the problem. When it proceeds with the Internet, the Internet program will provide learning materials and guide the clinical reasoning process. We developed the PBL casebank database on the web to facilitate development and maintenance of PBL case modules. The database has the 3-tier structure according to the form of the preexistent Internet program, and possible record forms are text, sound files, and image files. This database system is connected with web using ODBC(Qpen DataBase Connectivity) and ASP(Active Server Pages) technology on the Microsoft Windows NT server. With this PBL casebank system, we are hoping for owning medical education materials in common between universities and distance learning in medicine.