The invention discloses a fuel tank isolation electromagnetic valve in the field of valves. The fuel tank isolation electromagnetic valve comprises a fuel tank pipeline, an electromagnetic valve assembly, a snuffle valve assembly, a gulp valve assembly and a charcoal canister pipeline, wherein bottoms of the electromagnetic valve assembly, the snuffle valve assembly and the gulp valve assembly are all connected onto the fuel tank pipeline, and gas circuits are formed and communicated with the fuel tank pipeline; the upper portions of the electromagnetic valve assembly, the snuffle valve assembly and the gulp valve assembly are all connected onto the charcoal canister pipeline, and gas circuits are formed and communicated with the charcoal canister pipeline; the electromagnetic valve assembly, the snuffle valve assembly and the gulp valve assembly are connected together through casings among three assemblies; in a refueling process, the electromagnetic valve is turned on, and steam of a fuel tank is discharged into a charcoal canister rapidly in a controlled flow, so that the refueling waiting time is reduced, and the blocking problem of an FLVV (Fill Limit Venting Valve) is avoided as well; and the fuel tank isolation electromagnetic valve can be used in a motor vehicle control system.