文章借鉴C-D型生产函数,采用创新投入和创新产出两个指标衡量技术创新水平,构建包括对外直接投资、外商直接投资、出口贸易和进口贸易四个测度国际投资和国际贸易变量的双对数模型,利用2010-2019年省际面板数据,基于创新数量和创新质量两个维度研究国际贸易与国际投资对我国技术创新的影响。结果显示：对外直接投资和出口贸易都促进了我国创新投入数量的增加和创新产出质量的提高；外商直接投资仅对我国创新投入的数量和创新产出的质量产生较为明显的积极影响；进口贸易对我国创新投入与创新产出的数量和质量均没有显著的影响,但对西部地区创新产出的质量起到明显的负向作用。本文提出了包括加快构建国内国际双循环新格局以扩大对外直接投资、积极实施“引进来战略”、加大出口贸易力度、加强知识产权保护、主动寻求国际合作等政策建议。

Based on the C-D production function, this paper uses two indicators of innovation input and innovation output to measure the level of technological innovation, and constructs a double logarithm model including international investment and international trade variables of outward foreign direct investment, foreign direct investment, export trade and import trade. Based on the two dimensions of innovation quantity and innovation quality, this paper studies the impact of international technology spillover channels on China"s technological innovation. The results show that both ODI and export trade promote the quantity of innovation input and the quality of innovation output; FDI only has a positive impact on the quantity of innovation input and the quality of innovation output; Import trade has no significant effect on the quantity and quality of innovation input and output in China, but has a negative effect on the quality of innovation output in the western region. This paper puts forward some policy suggestions, including accelerating the construction of a new pattern of domestic and international double circulation to expand ODI, actively implementing the "import strategy", increasing export trade, strengthening intellectual property protection, and actively seeking international cooperation.

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