Traditional paper models need to be manually molded one by one, and due to the irregular shape of the production time, 3D printing can not only simplify time-consuming communication and production, customers only need to preview the finished product and place orders on the Internet, and finally the model Colors are converted to 3D printer color gamut and printed. This technology is a composite 3D online design platform. Customers can select buildings, architectural objects or furniture models on the cloud platform, and can customize maps, material sim-ulations, select colors, set sizes, 3D rotation operations, and so on. The mapping effect of the model, in addition to the platform provides 3D print output recom-mendation, allowing users to select the most suitable 3D printing materials for output.