Abstract: On July 19th, 2013, the People’s Bank of China announced the Notice on Further Promoting the Market-Oriented Interest Rate Reform, which released the lower limit of interest rate and pushed the interest rate reform forward towards marketization. The interest rate marketization has become the focus of theoretical researches and policy discussions in recent years. Marx and Keynes have great impact on these interest theories. To apply Mark’s interest theory to guild the interest rate marketization reform can help to realize the unified guilding thought for both the ideological sphere and the real economic sphere. It can also help us to keep Mark’s theory as guildance, so as to realize the smooth connection of various reforms and the coordinated process of the overall reform.

Key words: interest theory: interest rate; marketization