A display device in a monitored-person monitoring system according to the present invention is a device for a monitored-person monitoring system in which each of a plurality of monitored persons is sensed and the plurality of monitored persons is monitored, the device receiving and displaying monitoring information on the monitored person. While a monitoring information display screen expressing the monitoring information on a certain monitored person among the plurality of monitored persons is displayed, even if the monitoring information on another monitored person who is different from the certain monitored person is received, the display of the monitoring information display screen expressing the monitoring information on the certain monitored person is continued as long as a predetermined input manipulation has been accepted.
