选择2011-2021年中国30个省际面板数据作为样本，采用熵值法测算我国各地区科技金融水平和制造业创新发展水平，并进一步利用门槛回归模型实证检验科技金融对制造业创新发展的非线性影响。研究显示：科技金融对制造业创新发展的影响存在基于科技金融的三重门槛效应，随着科技金融水平阈值区间的提高，科技金融对制造业创新发展的正向促进效应呈现逐渐增强态势；我国科技金融水平高于第三门槛值的样本很少，因而基于加快推进制造业创新发展的视角，我国科技金融水平尚有较大提升空间，为此，应充分发挥政府对制造业创新发展的支持作用；着力提高制造业企业自身的自主创新研发能力；切实加大金融机构对制造业创新发展的支持力度。

With the Panel data of 30 provinces in China from 2011-2021 as the sample, the entropy method was used to measure the level of science and technology finance and the level of innovation and development of manufacturing industry in all regions of China, and the threshold regression model was further used to empirically test the nonlinear impact of science and technology finance on the innovation and development of manufacturing industry. Research shows that the impact of technology finance on the innovative development of manufacturing industry is based on the triple threshold effect of technology finance. With the increase of the threshold range of technology finance level, the positive promoting effect of technology finance on the innovative development of manufacturing industry is gradually increasing; There are very few samples in China where the level of science and technology finance is higher than the third threshold. therefore, from the perspective of accelerating the innovation and development of the manufacturing industry, there will be still significant room for improvement in China's science and technology finance level. Therefore, the government's support for the innovation and development of the manufacturing industry should be fully utilized; strive to improve the independent innovation and research and development capabilities of manufacturing enterprises themselves; effectively increase the support of financial institutions for the innovative development of the manufacturing industry.