企业研发机构是全面提高企业自主创新能力的中坚力量，但现有相关研究更多集中在企业规模与企业创新的关系上，较少关注企业研发机构规模与企业创新之间的互动关系。为此，选取2013－2020年我国29个省份的高技术企业的相关面板数据，采用联立方程模型、面板门槛模型和面板向量自回归模型对其研发机构规模与企业创新之间的静态线性关系、静态非线性关系和动态关系进行分析，并选用反向传播人工神经网络进行稳健性检验，以及运用脉冲响应函数和方差分解进一步分析企业创新、研发机构规模、研发经费投入、研发劳动力投入的脉冲响应。结果表明：企业研发机构规模与企业创新之间不存在显著静态线性关系；随着企业研发机构规模扩大，其对企业创新影响的弹性逐渐降低；随着企业创新成果水平的提高，企业研发机构规模对企业创新影响的弹性增大；企业研发机构规模扩大实际会在滞后1期时对企业创新产生最大的正向作用，且持续性不强，而企业创新对企业研发机构规模存在负向影响，说明当企业达成现阶段的创新目标后，大多不再进行大规模的创新，甚至适当削减其研发机构规模。

Enterprise R&D institutions are the backbone of comprehensively improving enterprises' independent innovation capabilities, but existing relevant research focuses more on the relationship between enterprise size and enterprise innovation, and less attention is paid to the interactive relationship between the scale of enterprise R&D institutions and enterprise innovation. To this end, relevant panel data of high-tech enterprises in 29 provinces in China from 2013 to 2020 were selected, and the simultaneous equation model, panel threshold model and panel vector autoregressive model were used to analyze the static linear relationship between the scale of R&D institutions and corporate innovation. , static nonlinear relationships and dynamic relationships were analyzed, and backpropagation artificial neural networks were used for robustness testing, and impulse response functions and variance decomposition were used to further analyze the impulses of corporate innovation, R&D institution scale, R&D funding investment, and R&D labor input. response. The results show that there is no significant static linear relationship between the scale of corporate R&D institutions and corporate innovation; as the scale of corporate R&D institutions expands, the elasticity of its impact on corporate innovation gradually decreases; as the level of corporate innovation achievements increases, corporate R&D institutions The elasticity of the impact of scale on enterprise innovation increases; the expansion of the scale of enterprise R&D institutions will actually have the greatest positive effect on enterprise innovation at a lag of 1 period, and the sustainability is not strong, while enterprise innovation has a negative impact on the scale of enterprise R&D institutions , indicating that when companies achieve their current innovation goals, most companies no longer engage in large-scale innovation, or even appropriately reduce the scale of their R&D institutions.

F272；F224.2；G301

浙江省自然科学基金重点项目“制造业从数量型创新向质量型创新转型机制研究”(Z21G030004)。