An inter-ring service protection method, comprising: for inter-ring service, from F1 to C1 to B1 and service, from E1 to C1 to B1, with a same inter-ring node and destination node,configuring a shared tunnel, Tunnel, the C1 to B1 part, for the inter-ring services (1, 3) on a same ring, Aggregation ring, which the inter-ring services (1,3) pass through, and on the inter-ring node, performing inter-ring tunnel binding, designating a master inter-ring node and a standby inter-ring node, and binding tunnels for each inter-ring service on an ingress node and an egress node of the inter-ring service; and detecting whether there is a status change in the ring which the inter-ring services (1, 3) pass through, and performing protection switching or switchback processing when there is a status change; characterized in that the method further comprises: for inter-ring service, from F1 to C1 to B1 and service, from E1 to C1 to B1, with a same inter-ring node and destination node,respectively configuring tunnels for the inter-ring services (1, 3) on different rings, Access rings (1, 3), which the inter-ring services (1, 3) pass through; wherein the step of performing inter-ring tunnel binding on an inter-ring node comprises: for inter-ring service, from F1 to C1 to B1 and service, from E1 to C1 to B1, with a same inter-ring node and destination node,binding the shared tunnel,Tunnel, which the inter-ring services (1, 3) pass through on the same ring, Aggregation ring and the tunnels (1, 3) configured respectively which the inter-ring services (1, 3) pass through on different rings, Access rings (1, 3) as one tunnel; and wherein the step of configuring a shared tunnel for the inter-ring services on a same ring which the inter-ring services pass through comprises: for inter-ring service, from F1 to C1 to B1 and service, from E1 to C1 to B1, with a same inter-ring node and destination node, configuring a shared working tunnel,Tunnel, the C1 to B1 part, and a protection tunnel, Tunnel, the C1 to C to B to A to A1 to B1 part, for the inter-ring services (1, 3) on the same ring, Aggregation ring, which the inter-ring services (1, 3) pass through. for inter-ring service, from F1 to C1 to B1 and service, from E1 to C1 to B1, with a same inter-ring node and destination node,configuring a shared tunnel, Tunnel, the C1 to B1 part, for the inter-ring services (1, 3) on a same ring, Aggregation ring, which the inter-ring services (1,3) pass through, and on the inter-ring node, performing inter-ring tunnel binding, designating a master inter-ring node and a standby inter-ring node, and binding tunnels for each inter-ring service on an ingress node and an egress node of the inter-ring service; and detecting whether there is a status change in the ring which the inter-ring services (1, 3) pass through, and performing protection switching or switchback processing when there is a status change; for inter-ring service, from F1 to C1 to B1 and service, from E1 to C1 to B1, with a same inter-ring node and destination node,respectively configuring tunnels for the inter-ring services (1, 3) on different rings, Access rings (1, 3), which the inter-ring services (1, 3) pass through; wherein the step of performing inter-ring tunnel binding on an inter-ring node comprises: for inter-ring service, from F1 to C1 to B1 and service, from E1 to C1 to B1, with a same inter-ring node and destination node,binding the shared tunnel,Tunnel, which the inter-ring services (1, 3) pass through on the same ring, Aggregation ring and the tunnels (1, 3) configured respectively which the inter-ring services (1, 3) pass through on different rings, Access rings (1, 3) as one tunnel; and wherein the step of configuring a shared tunnel for the inter-ring services on a same ring which the inter-ring services pass through comprises: for inter-ring service, from F1 to C1 to B1 and service, from E1 to C1 to B1, with a same inter-ring node and destination node, configuring a shared working tunnel,Tunnel, the C1 to B1 part, and a protection tunnel, Tunnel, the C1 to C to B to A to A1 to B1 part, for the inter-ring services (1, 3) on the same ring, Aggregation ring, which the inter-ring services (1, 3) pass through. for inter-ring service, from F1 to C1 to B1 and service, from E1 to C1 to B1, with a same inter-ring node and destination node,binding the shared tunnel,Tunnel, which the inter-ring services (1, 3) pass through on the same ring, Aggregation ring and the tunnels (1, 3) configured respectively which the inter-ring services (1, 3) pass through on different rings, Access rings (1, 3) as one tunnel; and wherein the step of configuring a shared tunnel for the inter-ring services on a same ring which the inter-ring services pass through comprises: for inter-ring service, from F1 to C1 to B1 and service, from E1 to C1 to B1, with a same inter-ring node and destination node, configuring a shared working tunnel,Tunnel, the C1 to B1 part, and a protection tunnel, Tunnel, the C1 to C to B to A to A1 to B1 part, for the inter-ring services (1, 3) on the same ring, Aggregation ring, which the inter-ring services (1, 3) pass through. for inter-ring service, from F1 to C1 to B1 and service, from E1 to C1 to B1, with a same inter-ring node and destination node, configuring a shared working tunnel,Tunnel, the C1 to B1 part, and a protection tunnel, Tunnel, the C1 to C to B to A to A1 to B1 part, for the inter-ring services (1, 3) on the same ring, Aggregation ring, which the inter-ring services (1, 3) pass through.