Abstract: To improve the popularization and application of domestic digital signal processor (DSP) chips, using the hardware platform of the signal processing module based on Huarui2 DSP, describring the basical design idea and the key technology of the board support package (BSP). Introducing the design method of multi-core synchronization inside the chip and multi-DSP synchronization inside the module, improving the startup performance of embedded system effectively. The configuration process of reliance file system is described. The BSP has been applied in many products, the paper provides reference for basic software design and application development based on Huarui2 chip.