The international monetary barrier has great infl uence for both enforced and enforcer states. The typical of developed countries of the enforcer states is the US， while the enforced states are the emerging economies. The influences are expressed in both macroeconomics and microeconomics and the types of trade mainly involve international trade in goods. This paper probes into dif erent forms of expression of the infl uences in enforcer states and dif erent developed countries as well as dif erent emerging economies.