In this paper, the Model Based Definition technology was used based on the development and manufacturing module of 3D model design software. Based on the existing national standards for process symbols, the 3D process information identification, the formulation and marking of 3D process symbols, and the design of 3D process procedures was described in detail. The paper takes the 3D digital process design and manufacturing process of a shielding box component as an example, the secondary development of software such as PDM Link and Product View are used to the process of digitalization, The realization methods of digitalization, standardization and dynamic visualization of process information annotation of its 3D process model are studied, The research results are applied to the 3D process design and manufacturing of product model, realizing paperless manufacturing, and promoting the application of 3D process design and manufacturing in products.