The medical team system in emergency medicine was needed to make up for labor shortage. Therefore we developed a system for promoting standardization of the medical practice (making medical protocols) to maintain the quality in medical practice for team and sharing information by using a groupware. The purpose of this research was to clarify the usefulness of this system in actual practice and whether it would lead to an improvement of learning environment and learning. Fourteen medical protocols of 66 themes in emergency medicine were created in half a year. We reviewed two case studies and took two questionnaire surveys to our all 6 physicians. It was suggested that this system could promote standardization of the medical practice in a view point of behavior change and learning environment, and made a chance of learning about updates of emergency medicine for all physicians (including young physician) in our workplace.