A remote controller includes a remote controller body including a control device configured to receive a remote-control command. The remote controller further includes an antenna and a holding mechanism movably connected to two opposite sides of the remote controller body, respectively. The holding mechanism is configured to hold a mobile terminal. The remote controller further includes a connecting mechanism connected between the remote controller body and the holding mechanism and configured to enable the holding mechanism to move relative to the remote controller body to be in an extended state or in a contracted state.