Over the past decade, development of computer-aided graphics in the field of appliedgraphics is rapid, and the graphics system which is established based on the traditional ruler gauge conditions has also changed dramatically. Therefore, the author reviewed the current situation, following the pulse of the information times, on the premise of practice and application, making bold adjustment to the traditionaldesign graphics teaching of environmental art design major, introducing intelligent 3D modeling technologyin the teaching process, making up for the defect of traditional graphics teaching space expression, and accordingly increase student computer graphics link, in order to construct the teaching system of design graphicswhich is fit to the information times.