A remote management system including a work machine side dynamic state data management device, and a management section side management device for causing a communication unit capable of data transmission and reception to and from a communication unit on the work machine side to receive dynamic state data transmitted from at least the work machine side and at the same time, causing a control section to run a Web site capable of providing data only to a user permitted to access and reflecting arbitrary data out of the received dynamic state data in the Web site.