Since reform and opening up, China has attracted a large number of foreign direct investment, hoping to enhance the domestic technological innovation capability. However, in the current context, China's goal of improving technological innovation through FDI has been achieved? China's regional high-tech industries need to need foreign investment? And other issues worthy of our in-depth study. The empirical results show that the impact of FDI on the high - tech industry in eastern China is positive and the negative impact on other regions is negative. Therefore, it should be based on the development of high-tech industries in various regions of China, the implementation of differentiated investment strategy to strengthen the accumulation of knowledge, human capital construction, and promote the development of high-tech industries in the region.