Abstract: In the contracted management of rural land ownership registration, it uses image analysis of land boundary in the AutoCAD platform, the correctness of the land boundary survey, and verifies the ownership of land information and information in common. In order to ensure the completeness and accuracy of data, the data according to the national standard format conversion to GIS management platform. Convert to GIS data on the AutoCAD platform of the multi segment line, using the Esri C++ library ShapeLib, using.NET language to develop two times, topology check, block line attribute inspection, will be converted to Polygon block line entity shape files, extended attributes into the DBF file, the final generation GIS general ShapeFile file format thus, improve work efficiency, and has a certain practical value.

Key words: land ownership, Autocad, ShapeLib