To promote the numeralization of aero-turbine blade design and relieve engineers from heavy designing calculation, a modeling technique of an aero-turbine blade is developed based on CATIA. At first, the geometric features and factors which impact its performance and strength of a blade are analyzed, and some parameters are selected to control the pattern of the section of a blade. Then, some tools and functions of knowledge engineering built in CATIA are used to construct a blade. The technique results to parameterization of aero-turbine blade design, and is proved to be effective while modeling a blade which has a G2 class continuity surface and contours of sections at different radial distance.%为提高航空涡轮叶片设计的数字化水平，减轻设计人员的设计计算量，开发了一种基于CATIA的航空涡轮叶片建模方法。首先在分析涡轮叶片几何特征及其气动性能和结构强度的影响因素，确定了叶片截面形状的控制参数，再运用内建于CATIA的知识工程工具和函数，构造三维涡轮叶片。该方法实现了涡轮叶片设计的参数化，所设计叶片的叶身曲面和不同径向位置的截面曲线均达到G2连续。
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