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2D electrohydraulic high-speed on-off valve was a two-stage valve,，which had a spool with two dimensional motions, a rotary electromagnet drove the spool to rotate by a set of lever-fork and achieve pilot function, and pressure difference pushed the spool to open or close quickly. The form of three circumferential uniformly distributed 52 blades was adopted by the rotor of rotary electromagnet. The output torque of rotary electromagnet was multiplied by five times, the rotor inertia was reduced by lever-fork and the dynamic characteristics of 2D high-speed on-off valve were improved. To test the dynamic characteristics of 2D high-speed on-off valve driven by double torsion pendulum wheel and rotary electromagnet,，two experimental programs of the valve were designed. The digital simulation and experimental results were quite coincide, which showed that the dynamic characteristics of 2D high-speed on-off valve were very quick; when the system pressure was 28MPa and the valve of 6mm diameter with spool driven by rotary electromagnet, the dynamic response time was about 18ms, spool displacement was 0.8mm and the flow rate was 60L/min.