Modeling method and system based on DEM real three-dimensional map and greenway

The invention relates to a modeling method based on a DEM real three-dimensional map and greenways. The modeling method comprises the steps of: A, intercepting a remote sensing base map of a specified region on a map downloaded from BigeMap by utilizing a BigeMap intercepting device; B, vectorizing factors for intercepting the base map of the specified region; C, conducting altitude data assignment and altitude division on the vectorized base map of the specified region in the DEM; D, respectively manufacturing three-dimensional models in MapGIS and 3DMAX according to the base map assigned with the altitude data; E, integrating a MapGIS three-dimensional model and a 3DMAX three-dimensional model in the MapGIS and pasting materials; F, and carrying out spatial analysis and attribute query on the three-dimensional model after materials pasting. The modeling method and the modeling system achieve the organic combination of functions such as ecology, recreation and culture, establish a slow-moving traffic system, apply the GIS-based real three-dimensional model to the new field of traffic construction, facilitate engineering construction, and have great innovativeness and significance.