Abstract: In the engineering design of automobile factory, the technology specialty mainly uses MicroStation for 3D design, but the software native function is not enough to meet the design requirements. This paper summarizes the creation method of MicroStation parametric cell, and puts forward two methods to realize the association between cell and attribute by MicroStation item type and secondary development plug-in. MicroStation CE item type can achieve the association between cell and attribute, but the convenience is insufficient. By using secondary development plug-in, it is possible to quickly generate technology data extraction model components and associate the data extraction with model components, compensating for the shortcomings of MicroStation CE software's native function, realizing the use of model components as carriers for data extraction. At the same time, it provides a prerequisite for the 3D data extraction of technology and lays the foundation for cross software collaboration between technology and civil engineering specialty. The engineering application shows that relying on the parametric cell and the secondary development plug-in, the efficiency of 3D design modeling and 3D data extraction raising is improved. The practice of this project provides a reliable basis and operation method for technology 3D design data extraction based on MicroStation, which has practical application value.