零件是产品设计、制造和管理的基本单元．包含零件生命周期的信息模型是ＣＩＭＳ信息集成、敏捷制造和电子商务的基础，是ＣＩＭＳ在数据库级实现信息集成必须解决的问题．本文讨论了基于特征的包括零件生命周期信息的模型结构，进一步讨论了管理特征、技术特征、材料特征、形状特征和精度特征，以及这些特征的属性组和指针． Parts are the basic unit of product design, manufacturing and management. The information model that includes the part life cycle is the basis of CIMS information integration, agile manufacturing and e-commerce. It is a problem that must be solved when CIMS implements information integration at the database level. This article discusses feature-based model structures that include part lifecycle information and further discusses management features, technical features, material features, shape features, and precision features, as well as attribute groups and pointers for those features.