GSRevit is a structural BIM forward design system developed on Revit, which completes the input of wall columns, beams and slabs, as well as load and design attributes; The resulting Revit model can be used to calculate the structure directly, and automatically generate the wall column and beam slab construction drawings on Revit. GSRevit can also be used for assembly structure calculation and design. Using GSRevit for structural design, only need to establish a model. The structural designer establishes a three-dimensional model during the preliminary design, and the plane cutting forms a template diagram for the preliminary design. Load and design attributes can be used for structural calculation, and reinforcement information can be used to draw construction drawings. The three-dimensional model can be directly used for collision inspection, and finally the model is given to calculation, construction and operation maintenance.