本文通过对价值、价格及供求相互之间关系的分析．说明价格木质上是价值的货币表现，价值是供求的基础，供求是价值的人格化──经济人在市场上的表现。同时指出在西方经济学大量传入中国的当今，马克思主义政治经济学不仅没有过时，而且仍然是经济学大厦的牢固基石。 This article analyzes the relationship between value, price and supply and demand. Explain that price is a monetary expression of value, and value is the basis of supply and demand. Supply and demand are the personalization of value ─ ─ the performance of economic man in the market. At the same time, he pointed out that in the present day when large quantities of western economics were introduced into China, Marxist political economy was not only out of date but also a solid foundation for the building of economics.