Abstract: With the continuous improvement of informatization and intelligence in the state grid and electric power engineering systems,the design concept of electric power engineering is gradually changing from traditional 2D design to 3D digital design. 3D geological modeling and collaborative design technology are widely used in power engineering,and the requirements for 3D modeling,visualization technology,and collaborative design across various disciplines are gradually increasing. Based on literature investigation and analysis,this paper systematically summarizes the research status of data models,interpolation fitting methods,implementation processes,and software platforms in the 3D modeling of electric power engineering. It focuses on the research progress and development trends of 3D geological modeling of electric power geotechnical engineering and its collaborative design application. In view of the issues existing in the research,development,and application of 3D geological modeling technology in the field of electric power engineering,this paper proposes corresponding suggestions based on the characteristics of electric power geotechnical engineering: in future research processes,more attention should be paid to the multi-scale characteristics of electric power engineering and the acquisition of multi-source data. At the same time,it is necessary to strengthen the combination with hydrogeological models,apply advanced technologies such as machine learning and big data,and improve the application level of collaborative design. The research results of this paper will greatly promote the application of 3D geological modeling technology and collaborative design in the power engineering industry.