基于相似学和相似系统理论，本文研究了相似系统工程的概念及其含义。相似系统工程主要研究一切与系统相似性有关的科学技术和组织管理实践问题。认为相似系统工程的主要特点是：１．将自然系统优化原理应用于工程实践，在人造系统中实现与自然系统中存在的某些相似特性；２．运用已知相似规律和一定系统已知优秀特性及经验或技术方法，成功应用于另一系统中，设计、组建和管理新的相似系统。结合工程实践，探讨了相似系统工程实践应用的原理与方法，以及向相似工程学发展的前景。

Based on the similarity system theory and similology,this paper studies meaning and conceptions of similarity systems engineering. Similarity systems engineering makes a special study of the practice of systems similarity in engineering technlology and organization management,whose characters is:1. Optimum principle of natural systems applied to engineering practice, bring about optimum similarity characters between natural systems and made systems;2. Similarity systems engineering will be beneficial to making success of applying similarity law and certain excellent characteristics and experienced and method which we already known to another systems,to design and construct and manage a new similar systems. With operation of engineering practice have been given to investigate and principle and method of similarity system engineering for application in practice,and development prospects of similarity engineering.