The purpose of this research was to establish, and evaluate "the information system in the emergency department's dispatch service management". The research place was the emergency medical treatment department of one medical center from December 3,2007 to July 22, 2008. The object of this study was the nursing staffs who used "this system". "This system" was established under the Healthcare Information System being a pattern interface. It was the user's primary design using the graph expression way, and it provided the assistance information. The uniform appearance presented the uniformity and had the reply function. Seven months later, the researcher used "the structural formula questionnaire" s to measure the appraisal of nursing staffs, regarding the systematic "usability" and "usefulness". The investigation result was: The nursing staffs accepted this system (mean 3.79±0.73). This research provide the hospital administrator to adapt the information science and technology in the medical environment.