Coupling rescue circuit and method for railway vehicle

The invention provides a coupling rescue circuit and method for a railway vehicle. The rescue circuit comprises a rescue master control circuit and a rescue coupling circuit of a rescue vehicle, and a rescued coupling circuit and a rescued tail end circuit of a rescued vehicle. The rescue master control circuit is electrically connected with the rescue coupling circuit, and the first emergency braking trigger circuit of the compartment, located between the master control end and the coupling end, in the rescue vehicle is sequentially connected between the first emergency braking trigger circuit of the rescue master control circuit and the first emergency braking trigger circuit of the rescue coupling circuit in series. A rescued coupling circuit and a rescued tail end circuit of the rescued vehicle, and the rescued coupling circuit is electrically connected with the rescued tail end circuit; the first emergency braking trigger circuit of the compartment, located between the coupling end and the tail end, in t