Abstract: Constructing entity models of mines through 3D printing technology is of great significance to guide mining teaching and production.Focusing on the complexity of mining engineering and capacity limitation of desk 3D printer，a new method of constructing "standard parts" of the mining models is proposed，which means that elements such as roadways ，bottom structures，and chambers，after being classified，will be designed into "standard parts" and conjunction parts according to certain rules.Then，these elements are printed into entities，and finally made up of different mining models.This method is common，repeatable and easy assembly which can also transform the mining model from virtual 3d to the realistic 3d.The application of research achievements to teaching can not only overcome the shortcomings of the traditional teaching model，but also improve students' learning enthusiasm and sense of the innovation.Integration the data of mines into the solid model of 3D printing can provide decision-making basis and measures for the production safety of mines.

Key words: 3D printing, Entity models, Standard parts, Mining design, Mining teaching