In order to better protect and inherit the artistic characteristics of Suzhou Song Brocade and promote its innovation, the work aims to innovate in the Suzhou Song Brocade with digital technology. The digital technology can fully grasp the artistic characteristics of Suzhou Song Brocade, to make it more in line with the development needs of the times and meet the development of modern society and the needs of consumers. The image style transfer algorithm was combined with morphological grammar to study the digital innovative design of Suzhou Song Brocade patterns. The validity of the proposed method was proved by the training of the algorithm model and the comparative experiments of multiple groups. The algorithm could accurately capture the style features of Song Brocade patterns and effectively apply them to different design scenes. The research on the digital design of Suzhou Song Brocade pattern based on style transfer algorithm not only provides strong technical support for the digital inheritance and innovation of Suzhou Song Brocade, but also supports and guarantees the improvement of creative efficiency, and makes it possible to combine culture with science and technology.