The Baisha Yangtze River Bridge adopts two-span semi-floating ground anchor suspension bridge with span of 590m+180m.This project possesses characteristics of a wide range of disciplines, complex structure and various construction processes, and it is necessary to make use of the forward cooperative design means of BIM model so as to ensure the quality of design products.In order to avoid the loss of information in the BIM model in the process of different software transmission, "R+GH+ARQ" is first proposed, which is a method based on the same software platform to carry out collaborative forward design.This paper describes the design analysis and application of BIM technology in the whole design process, which realizes the geological rapid cutting mapping and computational model interaction, introduction of cloud computing, construction simulation, mobile application and so on through customized secondary development, so as to enhance the added value of BIM model, expand the product service chain of BIM technology, and provide reference for the application of BIM technology in the forward design of the same type of bridge.