Constructs the Synergy Theory of economic growth and calculation methodology. Involves empirical comparative study on economic growth between China and the 14 developed countries. Comprehensive studies a variety of determining factors of economic growth, and calculates the contribution of these determining factors to economic growth. Uses the Data Envelopment Analysis to calculate the contribution of institutional innovation to economic growth. Analyzes several controversial issues in the study of economic growth, such as IT Investment and Productivity Paradox. Uses the new economic growth model and the method of DSGE to analyze the Chinese economy, and on this basis, proposes the countermeasures and suggestions about the problem of China's innovation-driven economy.