In order to further improve the commercial value of system, design a concise, applicable to the three-phase step motor vector control driver. The driver uses the SVPWM technology, by the STM32 processor and IPM power modules, from 2 aspects of hardware and software design are introduced, and the use of the driver and certain well-known brands of domestic DSP control drive driving test comparison. The results show that: under the same conditions, the driver cost is lower, the no-load starting test slightly has the advantage, and effect is similar to the DSP control vector drive