It discusses the digital design expression of the brand image. The concept of brand image digital design is determined,the function and principle of brand image digital design is put forward under the background of the digital age, through introducing the good examples of brand image digital design at home and broad, and the brand image facing the digital age is showed with the advantage of digital design. At the same time, to a certain extent,the main points of the brand image digital design is built to speed up the pace of the digital design. Brand image digital design is the basic specification, media and forms as well as the necessity of innovation based on the traditional brand image design, is also to apply the brand image development in the design form of digital carrier. Digital age requirements must not only conform to the changes in the era of brand image, but also in the process of digital design beyond the times change, so digital design brand image should be proactive.