Using the data covering participating countries of “One Belt One Road”, this paper explores the macroeconomic movement effects based on the channel of international trade. It also analyzes subsamples of periods. This research indicates that bilateral trade intensity does not significantly promote the economic coupling among “One Belt One Road” countries. Fiscal policy has a great impact on the economic coupling and the effects of foreign reserve, monetary policy and regional free trade agreement are limited. Take the strategy of “One Belt One Road” as an opportunity, the governments of participating countries of “One Belt One Road” should strengthen their trade cooperation and improve the transparency of macroeconomic policies to achieve the economic prosperity.