在水电工程三维可视化仿真场景实现过程中，针对水电工程的设计特点与视觉特征，提出CG知识库的概念，并以CATIA与3DS MAX软件为应用平台，从环节分解、要素分类、建立方法、关键问题等方面探讨了水电工程三维参数化模型库与三维网格模型库、材质库等CG知识库的实现思路及采用的主要技术，并阐述了通过CG知识库的运用，可快速搭建三维可视化仿真场景，缩短同类项目的制作周期，提高应用自动化的程度。

In the 3-D visualized simulation of hydropower project, the CG (Computer Graph) knowledge base is employed in line with the designing characteristics and visual features. With software CATIA and 3DS MAX as the application platform, ideas of the implementation and main technologies of CG knowledge bases inclusive of 3-D parametric model base, 3-D grid model base, and material base of hydropower projects are discussed. The details such as link decomposition, elements classification, model-establishing methods, and key issues are also explored. Through the application of CG knowledge base, the 3-D visualized simulation scene could be built rapidly, the production cycle of similar project can be shortened, and the level of application automation can be improved.