This paper presents a method for automatic CAD model reconstruction from 3D laser scanning data. 3D laser scanning is a surveying instrument integrated with various kinds of new high technologies, which operates by non-contact high speed laser measurement. The whole process includes data capturing, noise reduction, sub-sampling and surface reconstruction. Modeling accuracy is analyzed afterwards and finally comes to a conclusion that modeling from 3D laser scanning has a great value in virtual reproduction of the objects. Result shows the efficiency of the method addressed in the paper to mode objects.