The invention provides a fuel switching valve system. The system comprises a switching valve and a valve core; the valve core comprises a first end and a second end; the switching valve comprises a first inlet connected with a gasoline fuel channel, a second inlet connected with a methanol fuel channel as well as a third outlet connected with a fuel injector; and the third outlet communicates withthe first inlet and the second inlet. During low-temperature cold start of a car, the second end of the valve core abuts against and seals the second inlet, the first inlet is connected, and gasolineflows from the first inlet to the third outlet; when the water temperature of an engine is higher than the preset temperature, the first end of the valve core abuts against and seals the first inlet,the second inlet is connected, and methanol flows from the second inlet to the third outlet. By the aid of the fuel switching valve system, a set of fuel injector assemblies can be saved, and two kinds of fuel can be injected simultaneously through the single fuel injector.