Abstract: Based on the informationization and digitalization of innovation knowledge in the digital economy era, this paper constructs a model of the influence of Internet application on innovation of manufacturing enterprise, analyzes the intermediary effect of information connectivity and heterogeneity factor by taking the survey data of manufacturing enterprises of the World Bank as samples, using the Logit regression method and the intermediary effect model. The results show that use of the Internet by manufacturing enterprises has a significant positive impact on decision-making of innovation input, intensity of innovation input and innovation output. The information connectivity between enterprises and suppliers or customers in the upstream and downstream of the industrial chain plays an intermediary role. Among them, Internet information connectivity has a significant intermediary effect on the innovation of consumer goods manufacturing enterprises, but has an insignificant effect on industrial product manufacturing enterprises. The information connection with customers has a significant mediating effect on the innovation output of small and medium-sized enterprises. The results of research are helpful to explore the influence mechanism of information elements on enterprise innovation in the era of digital economy, and provide reference for different types of enterprises to implement the digitalization strategy and obtain “connection dividend”.

Key words: Internet, information connectivity, enterprise innovation, intermediary effect

摘要： 基于数字经济时代创新知识信息化、数字化新特征，构建互联网应用对制造业企业创新的影响模型，分析信息连通的中介效应及异质性影响，以世界银行中国制造业企业调查数据为研究样本，采用Logit回归方法与中介效应模型进行实证分析。研究结果表明：制造业企业使用互联网对于创新投入及创新产出具有显著的正向影响，与产业链上下游供应商和用户之间的信息连通发挥了中介作用。其中互联网的信息连通中介效应对消费品制造企业显著，而对工业品制造业企业不显著；与用户信息连通的中介效应对中小企业创新产出显著。研究结果有助于探索信息要素在数字经济时代对企业创新的影响机理，并为不同类型企业实施数字化战略、获得“连接红利”提供参考。

关键词: 互联网, 信息连通, 企业创新, 中介效应