Based on the basic characteristics of technological developmental scientific research institutions in China research institutions, this study put forward an evaluation index system of innovation ability of scientific research institutions of technical development according to various angles such as innovation support, activities, outputs, effects as well as operation abilities. This study uses the entropy method to calculate the weight of each index, raise the method of intuitionistic fuzzy ranking by calculating the weighted correlation coefficient between scientific research institutions and ideal or worst institutions through intuitionistic fuzzy numbers. Finally, this assay selects 10 Guangdong Provincial technological development institutions, studying the innovation ability evaluation study using the method above and providing some suggestions to improve the innovation ability of these scientific research institutions.