本文采用2003-2012年中国地区面板数据，利用超越对数的随机前沿模型和门限回归模型就政府研发资助和企业研发投入对中国创新效率的影响及政府研发资助和企业研发投入的最优强度区间进行分析。研究发现：目前在我国创新过程中，政府研发资助对创新效率的影响为负，存在一定的“政府失灵”，企业研发投入能够促进创新效率的提高，“市场失灵”现象较少出现；政府研发资助强度的最优区间为0.282以上，企业研发投入强度的最优区间为0.688-0.775。

This paper analyzes the effect of government R&D fundings and enterprise R&D inputs on China's innovation efficiency and optimal intensity range of government R&D fundings and enterprise R&D inputs by means of the logarithm of the stochastic frontier model and threshold regression model using the panel data of China from 2003 to 2012. The test results show that the government R&D fundings for innovation efficiency is negative, that is there is a "government failure". However, enterprise R&D inputs can promote innovation efficiency, "market failure" is less. At present, the optimal intensity range of government R&D fundings is 0.282 above, enterprise R&D inputs is from 0.688 to 0.775.