Embodiments of the present application provide a busbar integrated backup protection method and device, which includes: judging whether a main transformer backup protection skip first bus connection or a main transformer backup protection skip second bus connection is established; If so, judging whether the zero-sequence overcurrent element of the first line is operated; If so, judging whether thezero-sequence positive direction element of the first line is operated or whether the PT of the first line is disconnected; If the zero-sequence positive direction element of the first line is operated or if the PT line is disconnected, the bus comprehensive backup protection operation is executed to trip the first line. Embodiments of the present application can sequentially judge whether the skipping first bus connection or the skipping second bus connection is true, whether the zero-sequence overcurrent element is operated, whether the zero-sequence positive direction element is operated,or whether the line is disconnected by PT, and when all the above conditions are satisfied, the line is skipped, thereby realizing fast isolation of the fault.