In an on-site medical examination, an appointment is made from a work office in order to shorten the entire medical examination time of the patients and the order and the route can be shown at the medical examination site. The scheduler includes a waiting queue for individual medical examination items and a waiting queue for individual patients. The efficiency of the medical examination is achieved by communicating by wireless displays carried by patients at the medical examination site and by giving individual guidance concerning the places to go at the site.