The BIM model does not support finite element analysis， and data exchange between the BIM model and the finite element analysis model is difficult. As a result， the forward design process using BIM technology faces issues such as low modeling efficiency and difficulty in modifying models. This makes it impossible to integrate BIM structural design with finite element mechanical analysis， thereby increasing the cost of structural model creation and error correction. Based on the Revit and Midas/Civil software platforms， a set of Revit-Midas/Civil model information conversion programs is designed with the IronPython language in the Dynamo environment. Taking the main bridge of Boshi Bridge as an example， the program automatically realizes the following aspects： 1） It becomes possible for component decomposition in the Revit model bridge， section characteristics calculation， cable， and beam tower elastic connection processing. Then， the processed information was converted into the Midas/Civil language format MCT file， realizing the automatic conversion of the Revit to Midas/Civil model information； 2） The calculation results from the finite element analysis are fed back to the Revit model. The effect information is given a gradient color according to the numerical value， realizing the display function in the BIM model for the results of finite element analysis. This proposed methodology can realize the information conversion between the Revit-Midas/Civil model， which effectively improves the efficiency of BIM forward application and makes up for the lack of BIM technology in bridge analysis.