With the application of powerful spatial analysis, three‐dimensional display and data management capabilities of geographic information system, it has brought great convenience to people's production and life. In this paper, the mountain terrain scenic tourist walking road as the research object, through the use of three‐dimensional visualization spatial analysis tools of geographic information system and JavaWeb technology, planning an optimal viewing route for tourists, introduces the significance and role of three‐dimensional visualization in reality. At the same time, it provides a more reasonable and reliable basis for mountain terrain tourism route selection and lays a certain foundation for the later development of core technology.