A gate driving unit circuit pair and a driving method thereof, a gate driving circuit and a display device are provided. The gate driving unit circuit pair includes two gate driving unit circuits, each of which includes a first output sub-circuit, a second output sub-circuit, and a coupling and isolation sub-circuit. The coupling and isolation sub-circuit is configured to: if the first output sub-circuit outputs signal, isolate the signal of the first output terminal from the signal of the second output terminal; or else, couple the signal of the first output terminal to the second output terminal.