2007年底爆发的美国次贷危机令众多经济学家在深刻反思主流宏观经济学理论困境的同时,也使凯恩斯经济学重新回归经济学主流阵地。本文认为凯恩斯对货币的“自己的利息率”的系统阐述为解决资本理论中的异质资本品加总问题提供了重要方法,由此推导出不同于新古典一般均衡的货币均衡理论。基于货币均衡的凯恩斯宏观经济理论,既是对古典政治经济学以社会关系为核心的研究传统的继承与发展,也是解释现实国民收入核算体系统计变量的重要工具。 The subprime mortgage crisis that broke out at the end of 2007 led many economists to reflect on the predicament of the mainstream macroeconomic theory and to make Keynesian economics return to the mainstream of economics. This paper argues that Keynes’s systematic explanation of the “own interest rate” of money provides an important method for solving the problem of the sum of foreign capital in the capital theory, thus deriving the theory of currency equilibrium that is different from the neoclassical general equilibrium. The Keynesian macroeconomic theory based on the currency balance is not only an inheritance and development of the research tradition centered on social relations in the classical political economy, but also an important tool for explaining the statistical variables of the real national income accounting system.