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For the application of 3D printing technology, software, hardware, and materials are the three most important basic links. The software covers CAD modeling, CAM data preprocessing, CAE simulation, production management and many other aspects. From the perspective of the principle of 3D printing, the key factors affecting the forming accuracy and efficiency of 3D printing are inseparable from the data processing of the 3D model. The development of data processing software also restricts the development and progress of 3D printing technology to a certain extent.