Taking the service industry of 13 cities in the Beijing-Tianjin-Hebei urban agglomeration as the research object, this study uses methods such as coefficient of variation and standard deviation ellipse to explore the new development trend and innovation progress of the service industry in the Beijing-Tianjin-Hebei region from three aspects: industrial investment ability, industrial development scale, and industrial innovation ability. Research has found that the service industry in the Beijing-Tianjin-Hebei region has continuously improved its ability to attract foreign capital, but from the perspective of urban development, there is still a significant difference in the investment attraction ability of Hebei’s service industry compared to the two regions; The scale of the service industry in the Beijing-Tianjin-Hebei region continues to expand, and the industrial structure tends to be high-end. However, the current development of the service industry in the Beijing-Tianjin-Hebei region still exhibits a trend of focusing primarily on basic productive service industries; The innovation capability of the service industry in the Beijing-Tianjin-Hebei region has steadily improved, but core technologies and innovative enterprises are still concentrated in Beijing, and the diffusion effect on the two regions is relatively insufficient. The development of the service industry has not yet achieved a high-quality balance. To this end, countermeasures and suggestions are proposed to enhance the high-quality development level of the service industry in the Beijing-Tianjin-Hebei region, including optimizing the business environment for service industry enterprises, innovating industrial cooperation models, accelerating technology diffusion, and accelerating the introduction of targeted policies.