从分析CDMA手机的系统结构入手，详细分析了BREW的层次结构，并尝试从公开资料中剖析BREW实现机制，最后给出了PEK(porting evaluation kit)测试原理。-CDMA mobile phone from the analysis of the structure of the system to start, a detailed analysis of the hierarchical structure BREW, and try to analyze the information from the public to achieve a mechanism BREW, and finally gives the PEK (porting evaluation kit) test principle.