Electric actuator as a very important industrial production system implementation equipment, with high driving effect, compact size, precise control features. At present, it has been used in many industries such as petrochemical industry, power transmission and hospital wharf. The products have high cost performance and long service life, and are constantly favored by users. China's electric actuator development started relatively late, the beginning of a poor two white, do not understand the opposite direction, there is no technical reserves, by introducing a number of products from abroad, disassembly, study pondering, succeeded in creating the first domestic electric actuator. Although the product technical standards are relatively low, the technology used still stays in the actuator with the contact of the last century, but also a breakthrough for the domestic electric actuator.