Abstract: To solve problems of poor flexibility and portability and difficult update and maintenance of data in existing mine laneway 3D models, a 3D modeling method of mine laneway based on multipath was proposed. By defining point-polyline topological data model, the method can convert CAD format mine data to Geodatabase feature class, and uses developed ArcGIS Engine program and inserts node coordinate to create 3D mine laneway model, so as to realize automatic modeling of mine laneway, which effectively reduces working capacity of 3D laneway modeling.