Traffic land site selection method and system based on live-action three dimensions

The invention discloses a live-action three-dimensional traffic land site selection method in the technical field of road construction, and the method comprises the steps: selecting data related to road site selection, including land utilization status data, DEM data and no-pass data required by land space use control rules; in combination with road line selection requirements, factors and weights influencing road cost are determined through an expert method, and a path with the lowest cost is generated based on real scene three-dimensional data and natural resource space data. A road line selection knowledge base is constructed, line selection requirements are input, and an AI technology is utilized to generate a line selection scheme with the lowest cost, the most beautiful environment, the fastest speed and the like; in live-action three dimensions, various line selection requirements are considered, and the cost pair low path and AI line selection schemes are fused to form an optimal scheme. According to