Marshaling interlocking control method, device and system based on FAO

The invention provides a marshaling interlocking control method, device and system based on FAO, and the method comprises the steps: an automatic monitoring subsystem ATS sends front vehicle route handling information to an interlocking CI according to a coupling/decompilation route plan between a front vehicle and a rear vehicle; when the rear vehicle route is the route without the CBTC level and it is determined that the route approaching section is not occupied by the non-communication vehicle, rear vehicle coupling/de-coding route handling information is sent to the interlocking CI, so that the rear vehicle and the front vehicle complete coupling or de-coding action in the coupling/de-coding section; and when the rear vehicle route is a CBTC-level route and the route approaching section is determined to be in an idle state, rear vehicle coupling/de-coding route handling information is sent to the interlocking CI, so that the rear vehicle and the front vehicle complete coupling or de-coding action in the c