The invention discloses a transformer substation intelligent tour inspection three-dimensional GIS (geographic information system) building method. The method includes: generating a route network; adopting Garmin equipment to collect longitude and latitude data of all points in all routes in a transformer substation; inputting the data of the points into a Map-source, selecting all key points to form an adjacency list, drawing specific routes according to information acquired by Garmin through AutoCAD software, and generating a file in a .shp format; step 2, building a three-dimensional scene. By the method, the main technical problems of a three-dimensional GIS system in the aspect of realization technology of power related industry in the prior art include low graphic rendering efficiency, incomplete display of geologic information, a lot of three-dimensional modeling work and difficulty in maintenance are solved.