Disclosed is a management server of a remote monitoring system for communication with a remote monitoring terminal device mounted on a mobile work vehicle or vessel, which easily allows identification of an occurrence date and time in which failure occurs in the mobile work vehicle or vessel, and behavior analysis in a unit of an operation time period from a startup to shutdown, which. The management server causes an output section to output a startup date and time, shutdown date and time, minimum, maximum, and average values, and an occurrence count and durations of a predetermined event, for each of the operation time periods from the startup to shutdown in a unit of the remote monitoring terminal device, and causes the output section to output the startup date and time, shutdown date and time, and a movement locus of the mobile work vehicle or vessel based on the location information, for each of the operation time periods from the startup to shutdown in the unit of the remote monitoring terminal device.