Under the background of digital transformation of design enterprises,in order to improve the level of structural analysis in the process of digital design of water conservancy and hydropower projects and improve the efficiency of data utilization,this paper studies a CAD/CAE integrated analysis plug-in,which is developed based on MicroStation and Ansys software platform. It can import the geometric data and material data in BIM design model into CAE software for pre-processing work,which expands the application scope of CAD/CAE integration for complex structures. The calculation result data in Ansys software is converted to MicroStation platform for post-processing work,which is independent of the post-processing module of CAE software and is conducive to data transfer and storage. The plug-in has been well applied in the structural analysis of a concrete face rockfill dam,and the data utilization level has been improved. The related technology can be used in the structural analysis module of other water conservancy and hydropower projects.