The World Investment Report 2024 indicates that the global FDI flow in 2023 was only $1.37 trillion，a decrease of 2% compared to 2022. Against the backdrop of the continuous shrinkage of the global foreign direct investment “pie”，the task of utilizing foreign capital in our country has become more arduous and complex. The China Statistical Bulletin on Foreign Investment 2023 reports a decline in the number of newly established foreign-funded enterprises to 38，497 in 2022，with a significant decrease in European and ASEAN investments warranting attention. Beijing’s main industries are asset-light service industries，and the competitiveness of foreign-funded service industries is not as strong as that of the manufacturing industry. The difficulties and “cultural incompatibility” faced are more severe. At this stage，Beijing’s investment attraction environment is under dual pressures from its own industrial structure and external environment. Based on this，this study focuses on analyzing the current status of Beijing’s opening up in three key service industries-telecommunications，finance，and professional services-and the gap with the CPTPP，and accordingly puts forward some suggestions，including actively aligning with high-level international economic and trade rules，exploring the optimization of the negative list for cross-border services，accelerating the opening up of service industries such as telecommunications and legal services，speeding up the construction of “two countries and two parks”，promoting the reform of data flow grading，facilitating the movement of natural persons，and improving the environment for foreign investment in R&D.