The invention relates to a novel automobile high-pressure-resistant oil tank isolation valve. The novel automobile high-pressure-resistant oil tank isolation valve is characterized in that the oil tank isolation valve comprises an isolation valve body, a spring assembly, a valve core assembly, a supporting rod, a restrictor ring, a sealing ring and an electromagnetic valve; the spring assembly, the valve core assembly, the restrictor ring, the supporting rod and the sealing ring are all arranged in the isolation valve body; and the electromagnetic valve is arranged at the end of the isolationvalve body. According to the technical scheme, the novel automobile high-pressure-resistant oil tank isolation valve is simple and ingenious in structure, and the complex functions of high-pressure air exhausting, negative-pressure air supplementing, oil charging air exhausting and the like are achieved by means of a few of parts including plastic parts, springs, the electromagnetic valve, rubberparts and the like; by adjusting the diameter of a hole and the sizes of the springs, the requirements of different customers can be met; only one electromagnetic valve is adopted for the isolation valve of the structure, so that electric energy is saved; and the isolation valve of the structure is small in size and does not occupy the space of a chassis.