本文阐述了反求工程的基本概念，针对反求工程的应用目标及目前反求工程研究的现状，提出了反求工程中的重构参数、实物原型参数、原始设计参数的概念，指出对某些应用而言反求工程设计阶段的工作应是还原出原始设计参数，而不是实物原型参数，并给出了反求工程系统的工作模型。 In this paper, the basic concepts of reverse engineering are expounded. According to the application goal of reverse engineering and the present status of reverse engineering, the concepts of reconstruction parameters, physical prototype parameters and original design parameters in reverse engineering are proposed. For some applications, the reverse engineering phase of the project should be to restore the original design parameters, rather than the physical prototype parameters, and gives the working model of the reverse engineering system.