To consider effective medical treatment safety measures, various factors that lead to malpractice should be understood and analyzed objectively. An incident report system was constructed at the University of Tokushima hospital. A safety management room was set up in the university hospital. The system collected information and analyzed submitted incidents in order to contribute to safer medical treatment. However, the current educating system is not able to effectively teach the incident reports system to the 1,000 or so staff members. This is due to a busy hospital atmosphere which leaves little time for educational instruction. In response to this problem the E-learning system was developed in order to effectively administer the medical treatment safety education. This E-learning system was evaluated by the participating 'learners' who were hospital staff members.