Method for converting AutoCAD data into GIS spatial data

The invention discloses a method for converting AutoCAD data into GIS spatial data. The method comprises the following steps: 1, opening a graphic document to be processed in AutoCAD software, and performing ID marking on all graphic objects in the graphic document; 2, performing text marking on the graphic objects; 3, acquiring the basic attribute of the graphic objects; 4, establishing spatial databank conversion, and storing the data. As the AutoCAD data are converted into GIS spatial data and are shared in time, all information (including the basic attribute and the expansion attribute) in AutoCAD is maintained in the converted graphs, the data amount to be converted can be controlled according to different precision requirements, and the application range of the AutoCAD data is widened.