中文摘要：

为分析城市化对中国创新效率的影响及其机理,基于创新二阶段视角下的技术开发和技术转化两个阶段,利用中国2004~2015年30个省份层面的面板数据,研究了城市化对创新效率影响的特征、规律及交互效应。研究发现：（1）近年来,城市化抑制了技术开发效率,但促进了技术转化效率,即城市化对创新效率的影响存在阶段异质性;（2）城市化对技术开发效率的影响具有条件性,二者之间具有U型非线性关系,当城市化水平跨越一定临界值时就会促进技术开发效率,新常态下尚有部分中西部省份陷入城市化抑制技术开发效率的困境;（3）若能充分考虑城市化与引进外资、改善金融环境等因素的有效融合,则能在一定程度上扭转初期较低的城市化水平对技术开发效率的负面效应。

英文摘要：

From the two-stage perspective of technology innovation, using panel data of Chinese provinces from 2004 to 2015, this study analyzes the effect mechanism of urbanization on innovation efficiency of China, for the characteristics of the R＆D innovation efficiency. The study found that.. （1） In recent years, urbanization inhibited technology development efficiency, but promoted the techno- logical transformation efficiency, namely this impact on innovation efficiency had a stage difference;（2）This kind of impact on technological development efficiency is conditional, and with ＂U＂ type of nonlinear relationship, when the level of urbanization exceeding a certain critical value,it will promote technological development efficiency, in the new normal of economic, there is still a part of the central and western provinces which are at a technology development efficiency dilemma;（3）In the process of urbanization, if the fusion effect is taken into consideration with foreign capital, improving the finan- cial environment, strengthen environmental regulation and other factors, it will help to reverse the negative effects of innovation efficiency in the early days of the low urbanization level.