The deep integration of digital technology and traditional art can effectively enhance the inheritance, development, and protection of traditional art. This paper establishes the integration mechanism between digital art and traditional artistic expressions and uses the hierarchical analysis method to assign weights to the indicators in the evaluation system of digital art and traditional artistic expressions. The raw data in the evaluation model for the integration of digital art and traditional artistic expressions in a certain region from 2018 to 2022 are selected to calculate the weights of the indicators while quantitatively measuring the time-series development trend of the degree of integration in the selected region. Taking 15 cities and municipalities in a certain province as research objects, gray correlation analysis was used to explore the integration of digital art and traditional artistic expressions among the cities and municipalities. In the evaluation system for the integration of digital art and traditional artistic expressions, the indicators with the highest weights are the degree of content theme innovation, audience acceptance, comprehensive visual and auditory experience, and educational significance, with weights of 0.12, 0.12, 0.11, and 0.11, respectively. In addition, this paper measures that the degree of integration between digital art and traditional artistic expressions from 2018-2022 shows a gradual upward trend.