Song Dynasty grottoes, the last stage of the Chinese grotto art history, mainly distributes in Dazu and Anyue, Yan'an, Lingyin, and Jiangyong.Dazu Rock Carvings are the most representative example:not only because they are a glorious summary of Chinese grotto art, but also because they are a typical text and a concentrated reflection of design of the Song Dynasty grotto art.Their unique color concept and expression form have distinct time and region characteristics.As the epitome of the grotto art of Song Dynasty, their color design reflects the characteristic of combination of shape and color as well as integration of the sacred and the secular.As a reflection of the Song Dynasty society, their color concept system is diachronic, conventional, synchronic, economic, technical, perceptual, unconscious, and metaphorical.As a materialization of the Song Dynasty culture thoughts, they marked the finish of sinicization and popularization of Buddhist grotto art, as well as the highly mature and systematic of Taoism and Confucianism grottoes.