Chishui River Bridge is a suspension bridge in mountainous area with kilometer level span. Because of its large scale and complex technology, traditional design methods are not sufficient to meet the design requirements. BIM Technology is therefore introduced to the design of the suspension bridge in order to solve the difficulties in the design process of the suspension bridge including route comparison and selection, topographic and geological design, anchorage design, cable clamp design and structural drawing. Meanwhile, BIM Technology is also applied to the project, such as secondary development, VR technology, component coding, etc. It is proved that the application of BIM Technology in the project can effectively solve some problems in the design process of suspension bridge, improve design quality and save cost, which could be used as reference to similar projects.