To enable a proper and quick nursing (treatment) by enabling a care giver to easily grasp the past moving state of a care receiver.

The staying place of the care receiver is detected by a sensor 5 set in each room of the care receiver's house through the radio communication with a wrist band mounted on the care receiver's arm. A detection information collecting device 4 collects detection information from each sensor 5 and transmits it to a safety reporting device 1 in a safety reporting center. The safety reporting device 1 manages the detection information in time series in a staying time management DB 12. When the staying time exceeds a reference value managed by a reference time management DB 13, the safety reporting device 1 superposes the past moving track on the room layout drawing of the care receiver's house managed in a layout drawing data management DB 14, and transmits it to the care giver terminal 3 of the care giver.