本文设计了一种基于DSP 和CAN 通信的分布式电源系统监控平台。本系统充分利用了DSP 高速、实时、外设集成度高、扩展性强等特点和CAN 总线通信的高安全性和抗干扰性等优点。并充分考虑到系统产品化的特点，使其具有两种监控模式和模块化的可拆卸结构。文章首先从硬件设计方而对该系统进行了详细的介绍，对系统中采用的重要的功能电路作了分析和说明，然后再给出了一些重要的功能软件设计方法。关键字：DSP,CAN 通信，电源监控Abstract: Based on the origin and request of the system, a supervising system based on DSPand CAN bus is designed. The character of DSP such as high speed, real time, multipleintegration peripherals, good expansibility and advantages of CAN communication such as high reliability, good resisting disturbance performance are fully applied in the system. Meanwhile, considering the system is designed as a product, two supervising mode for selection and modularization structure are designed. At first, the hardware design is discussed in detail and some important circmts are introduced too. Then the software design methods are presented.Key word: DSP,CAN communication, Electrical supervise