Abstract: This paper construct cyclical reaction function of R&D intensity and investigate the asymmetric effect of business cycle to R&D intensity using annual panel data for 30 provinces & cities of China over the period from 1998 to 2011. The empirical result shows: R&D intensity of China moves counter-cyclically, each stage of business cycle has significant asymmetric impact on R&D intensity. The negative impact of economic expansion on R&D intensity is stronger than the positive impact of economic recession so that continuous business cycle has negative effect on R&D intensity, which is stronger in western area. Therefore, different science and technology policy should be applied in each period of economic cycle and each region.

摘要： 构造研发强度周期性反应函数，以中国30个省市1998-2011年的数据为研究对象，分析经济周期各阶段对研发强度的非对称影响。研究结果表明，我国研发强度逆周期变化，且经济周期各阶段对研发强度有显著非对称影响，经济扩张对研发强度的负向影响力度大于经济紧缩对研发强度的正向影响力度，在长期中，持续的经济波动对我国研发强度有负效应，分区域看，这种负效应在西部地区更强。因此，我国应针对经济周期不同阶段在各区域合理定位科技政策。