Based on a set of evaluating index system of regional innovation capability(RIC),and using synthetical evaluating methods for combination of factor analysis and cluster analysis,the authors evaluate and compare the regional innovation capability of 31 provincial regions in China.The results show that the disparities of regional innovation capability in China are obvious,it is feasible alternatively to synthetically evaluate regional innovation capability with factor analysis,and some measures of the promoting the regional innovation capability should be established not formally but aggregatively.