A mobile device includes a first connection establishment module, an information sending module, and a first operation module. The first connection establishment module is configured to send a connection request for establishment of a connection between the mobile device and a cloud server to the cloud server according to first authentication information. The information sending module is configured to send the identification information and the state information of the mobile device to the cloud server. The first operation module is configured to receive the feedback information of the cloudserver and to control the mobile device according to the feedback information. The present invention further provides a control terminal and a mobile device control system and method. The control terminal, the mobile device, the mobile device control system and method establish the connection and communication with each other through the cloud server, so as to reduce the limitation of environmentusage and improve operation experience.