本文首先介绍MPEG-1的标准，然后进行解码算法分析，并基于S3C2410、ⅡS总线、DMA控制器与UDA1341TS芯片，提出了一套完整的MP3播放器的设计方案，包括硬件设计、低层驱动、MP3解码软件设计，并详细介绍了其实现过程。-This paper introduces the MPEG-1 standard, and then decoding algorithm analysis, and based on S3C2410, Ⅱ S bus, DMA controller and UDA1341TS chips, put forward a complete set of MP3 player design, including hardware design, low drive, MP3 decoding software design, and details of their implementation process.