汽车行业管理信息系统使用多层体系结构进行设计可以降低软件模块的耦合度，提高软件的开发效率，降低 软件的维护成本。本文分析了多层体系结构中各层之间的关系，并根据不同的客户群体提出了不同的解决方案。

The application of multi-layer architecture in the management information system of automobile industry can reduce the coupling degree of software modules, improve the development efficiency and reduce the maintenance cost. This paper analyses the relationship between layers in the multi-layer architecture, and puts forward different solutions according to different customer groups.