Working medium: gas, liquid, switch response speed up to 1 millisecond (lms). In the pulse width, frequency modulation, to achieve the flow, pressure control, but also for quick turn on, off use. For automotive, petroleum, chemical, pharmaceutical and automatic control system in the valve. The main feature is the moving coil structure. The moving principle of moving coil loudspeaker is applied on the solenoid valve. The moving coil generally adopts non-magnetic material, which will not cause adverse effects such as magnetic saturation, hysteresis and residual magnetism. Due to the adoption of conventional materials, the material cost is low, the manufacturing cost is low, the structure is simple, and the technological requirement is not high, so it is suitable for popularization and application in many industries. Compared with the existing technology 1, to achieve the same requirements of the prior art case, the use of conventional materials instead of expensive high-frequency electromagnetic materials, substantial Yang's cost, slightly lower 2 / 3. 2, does not require special processing and heat treatment process , Reduce manufacturing costs, reduce equipment investment. 3, the structure is simple, easy to manufacture. 4, save rare metal resources.