Abstract: How to describe the component model exactly and briefly is an important issue of component-based software development.A component model with non-functional features is proposed；the description of non-functional features is improved.Firstly，this paper defines the component model，then analyzes the excellence and characters of the model and points out its application in component matching.Finally，it gives the further research direction．

Key words: software component, component model, non-functional features

摘要： 如何准确简洁地描述软件构件模型是面向构件的软件开发的一个重要问题。提出一种非功能特性权值描述的构件模型，强化了构件模型非功能特性方面的描述。首先给出了构件模型的定义；然后分析了其性质和优点，并指出了该模型在构件查找匹配中的应用价值；最后指出了下一步的研究方向。

关键词: 软件构件, 构件模型, 非功能特性