Abstract:      As the source of technological innovation, basic research is an important channel to break the boundary of innovation application ability. How to promote the effective development of basic research has become an important issue of concern to the government and scholars. Basic research is not aimed at any specific application, it is difficult to trigger the motivation of enterprises to invest independently. At the same time, the distribution of the existing resources of basic research makes the industry-university-institute basic research cooperation become an important way for enterprises to efficiently obtain the relevant results of basic research and improve their independent innovation ability. Therefore, it is of great significance to analyze the effective advancement of basic research from the perspective of industry-university-institute cooperation to solve the generic technology problems of related industries.This paper introduces two kinds of fiscal policies into the incentive framework. Based on the data of information and communication technology (ICT) in China from 2004 to 2018 as observation samples, hierarchical and grouped regression methods are adopted to focus on the differentiation effect of R&D subsidies and tax breaks in basic research cooperation. On this basis, the interaction law under different fiscal policies combinations is discussed in combination with incentive theory.Firstly, based on the complementarity of innovation subjects, this study discusses the significance of industry-university-institute basic research cooperation on the acquisition of breakthrough innovation of enterprises. On the whole, close cooperation between industry and research institutions in basic research is helpful for enterprises to obtain high-quality innovation breakthroughs.Secondly, based on the characteristic differences of fiscal and tax policies, this study discusses the heterogeneity of the incentive effect of fiscal and tax policies on the basic research cooperation of industry-university-institute. It is found that due to the differences in the mechanism, direction and controllability of incentive modes, R&D subsidies can promote the smooth progress of basic research cooperation, while tax breaks inhibit this process.Thirdly, considering the fiscal and tax policy combinations, this study explores the differences in the incentive effects of tax breaks under different R&D subsidy levels. It is found that when R&D subsidy level is in the middle level, tax break can play a positive incentive role, and the complementary effect of fiscal policies combinations can be formed.As the focus of innovation continues to move forward, relevant government departments should pay attention to the cooperation practice of industry-university-institute basic research, and rationally use fiscal and tax policies to encourage it. The research results give the following enlightenment. Firstly, the cooperation among industry, university and research institute in basic research is beneficial for enterprises to achieve the collaboration of internal and external R&D forces. Secondly, as an innovative behavior of anti-market mechanism, the fiscal and tax policy support in the coordination of basic research cooperation should take the lead in providing stable R&D subsidies. Finally, the government should continue to optimize the fiscal policies support system in the basic research cooperation among enterprises, universities and scientific research institutions, improving the allocation efficiency of public resources.

Key words: industry-university-institute cooperation, basic research, R&D subsidy, tax break, breakthrough innovation