Kesi craftsmanship in Song Dynasty has unique aesthetic form and artistic value. From the perspective of digitalization, it inherits and applies its design elements to realize the innovation of Kesi in Song Dynasty in the contemporary context. The most representative combined patterns of the Kesi craft of the Song Dynasty are selected, and the rolling guide filter is used for denoising extraction, combined with the shape grammar theory and HSV color coding method to construct the traditional pattern element library and color library of the Kesi craft in the Song Dynasty. Designed and applied with silk scarf as the carrier, and the fuzzy theory is used for comprehensive evaluation of the design scheme. The results show that the fact that incorporating the Kesi craft of the Song Dynasty elements into modern design not only inherit the core of Song Dynasty silk art, but also realize the innovation of the Kesi craftsmanship under the modern digital age.