The present invention provides a remote restart device and system, and relates to the electric power device technology field. The device comprises: a regulation and control center, a central controller, a double-position relay, a field device and a power supply. When usage, the central controller performs real-time monitoring of the operation state of the field device, when the field device is crashed, fault signals are generated, the central controller sends the fault signals to the regulation and control center, the regulation and control center calculates the grade of the fault signals and sends the grade of the fault signals to the central controller, when the grade is larger than or equal to a preset threshold, the central controller generates restart signals, the double-position relay is switched to a first state after receiving the restart signals to disconnect the connection between the field device and the power supply, then, the double-position relay is controlled to switch to a second state after receiving the restart signals to communicate the connection between the field device and the power supply to restart the field device so as to realize remote restart of the field device, and therefore the remote restart device and system are convenient and rapid.