In order to improve the accuracy of building model production,with 3D laser scanning as the technical background,the research on the visualization method of building model production is carried out.The 3D laser scanning device is placed in a position with few obstructions and with a wide field of view.After multiple scans,multiple sets of overlapping point cloud data are obtained.By transforming the relationship between the coordinate systems,the point cloud data can be spliced,denoising and smoothing.After processing,based on several geometric features that constitute the surface line of the building,the boundary of the section and the characteristic structure of the building are extracted to realize the visualization of the building model.Select a landmark building,analyze the accuracy of control points,survey sites,target and other indicators,and make a three dimensional model of the building based on the effective measurement accuracy.After comparing the model with the actual building size,it is found that the proposed method can be effectively achieve the visualization of building models and greatly improve the production accuracy.