Provided are a watching system and a management server wherein recovery can be performed easily when communication between a mobile terminal and the management server has been lost, while reducing the burden on a careworker, for example. In this watching system: a mobile terminal transmits, to a management server over a network, login information including identifier information of the mobile terminal and information on a user operating the mobile terminal, and thereby, the management server allows the mobile terminal to log-in, and thus information can be downloaded from the management server to the mobile terminal； the mobile terminal transmits logout information to the management server, and thereby, the management server allows the mobile terminal to log-out, and thus information cannot be downloaded from the management server to the mobile terminal； an information storage unit that stores said login information used for the login of the mobile terminal is provided； if the mobile terminal and the management server become incommunicable after the mobile terminal has transmitted the login information and before the same transmits the logout information, the mobile terminal automatically transmits a re-login request, and the management server puts the login from the mobile terminal on hold during a standby period； and, if the management server receives the re-login request within the standby period after the mobile terminal and the management server return to a communicable state, the management server resumes the login for the mobile terminal that transmitted the re-login request on the basis of the login information read out from the information storage unit.L'invention concerne un système de surveillance et un serveur de gestion permettant d'exécuter une récupération facilement lorsqu'une communication entre un terminal mobile et le serveur de gestion a été perdue tout en réduisant la charge sur un travailleur social, par exemple. Dans ce système de surveillance
