The performance of three types of gradient cultivation enterprises, including Eaglet enterprises, Gazelle enterprises, and Technology Leading (Cultivation) enterprises was explored, in terms of quantitative scores of scientific and technological innovation capabilities, and effectively evaluate and enhance their technological innovation capabilities. Focusing on the issues of outlier exclusion and range determination of quantitative values in the application and evaluation of quantitative scores for technological innovation capabilities, the IQR statistical analysis method was adopted to design a research scheme. Through the calculation and comparison of the range value, median, mean, and proportion of core indicators of the quantitative scores, the data are processed and analyzed. The results show that through an empirical analysis of quantitative score application data in Tianjin, different gradient cultivated enterprises exhibit their unique characteristics and development trends in terms of innovation capabilities. The designed research scheme demonstrates reliability and effectiveness. Based on the evaluation results, optimized countermeasures and suggestions are proposed to provide references for the development of different types of enterprises and government decision-making.