The present disclosure is directed to a method, device, server, and system for managing a system. The method including: a first cloud-connectable device obtaining a connection status of a target cloud-connectable device using a same account, the first cloud-connectable device sending to the server a managing message regarding the target cloud-connectable device, the server managing the connection status of the target cloud-connectable device based on the managing message transmitted from the first cloud-connectable device. The present disclosure can facilitate effective management of multiple cloud-connectable devices capable of receiving cloud server.