Abstract: The fine parametric modeling of equipment is driven by database based on French Dassault 3DE collaborative design platform by relying on the design work of hydraulic machinery specialty of Wudongde Hydropower Station. After electromechanical interface is defined,the mechanical and electrical equipment model library is built. Through the interactive and collaborative design of hydraulic machinery,electrical,HVAC,civil engineering and so on,multi-specialty interference check and establishment of automatic avoidance rules,the construction of 3D model is completed. The 3D design is driven through the system schematic diagram. After 2D drawing is created,it can mark parts and generate material list automatically. Then EKL language of 3DE platform is used to customize material report and other BIM design technologies,this paper combs out a set of hydraulic machinery full forward BIM design process.