As a high-resolution, rapid, non-contact digital means, laser measurement technology is increasingly widely applied in the field of manufacturing. The data processing method of point cloud is presented on the basis of measurement of scattered laser point cloud. Based on the usual methods of data processing and analysis, how to apply the virtual slicing technology and virtual projection technology of measuring point cloud is emphasized. The technologies of virtual slicing of point cloud include radial/axial slicing, cylindrical slicing, and axial slicing for the specified radius. Virtual projection technologies of point cloud mainly include feature projection and axial rotation projection technologies. Meanwhile, based on the virtual projection of point cloud, the extraction strategy of part parameter is concluded. It is validated by a part′s digital detection after its laser measurement that the proposed data processing methods and strategies are effective.