The invention discloses a double-heading valve with an automatic changeover function. The double-heading valve is composed of a double-heading valve portion and a shutoff valve portion. The double-heading valve portion comprises a double-heading piston and a double-heading check valve which are arranged in a double-heading valve body. The shutoff valve portion comprises a shutoff piston and a shutoff check valve which are arranged in the double-heading valve body. Pathways which communicate with a brake cylinder pipe, an average pipe, a purpose pipe, a main blast pipe and a double-heading signal pipe are mounted on the double-heading valve body. According to the double-heading valve with the automatic changeover function, status signal pathways are added on the double-heading valve body and a manual changeover valve is removed. When a locomotive is used as a double-heading locomotive, a double-heading signal is inputted and the double-heading valve is in a double-heading position, it is guaranteed that the release of brake of the double-heading locomotive is consistent with that of a leading locomotive and the coordination control over the double-heading locomotive and the leading locomotive is realized, and therefore misadjustment, leaking of adjustment and the like caused by manual rotation of the changeover valve are avoided. The double-heading valve with the automatic changeover function reduces workloads, guarantees traffic safety, improves transport efficiency and has higher social benefits and higher economic benefits.