Abstract: For improving the dynamic characteristics of the ABS (anti-lock braking system) solenoid valves, reducing the moving time and considering the influence of the hydraulic pressure in the braking process, the model of ABS hydraulic system was built by using AMESim software. Step-shaped braking pressure was measured by the ABS mixed simulation test-bed, and compared with the simulated results, which showed that the mean difference was less than 84 000 Pa. Taking advantage of the tool optimization and setting the operating time of the solenoid valves as the target, solenoid valve of main parameters were optimized through the genetic algorithms, and operation time was 1.1 ms and 1.4 ms faster than before for the pressure valves and pressure reducing valves, respectively. The results that can provide reference for design and improvement of solenoid valve.