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20世纪70年代以来东亚各国（地区）的经济周期在某些时期表现出了比较明显的同期性，而在另外一些时期则存在着离散的倾向。通过计算东亚各国（地区）经济增长率之间的斯皮尔曼相关系数实证检验了上述结论。东亚区域内贸易的增长和紧密经济联系的构筑、东亚各国（地区）趋同的经济和金融政策以及世界性冲击是东亚各国（地区）经济周期在某些时期出现同步变动的主要原因；而东亚各国（地区）内部宏观经济政策和经济状况的差异以及外部冲击的减弱是导致东亚地区经济周期同期性在90年代上半期出现离散的主要原因。
The economic cycles of East Asian countries (regions) since the 1970s have shown more obvious synergies in some periods, while in other periods there have been discrete trends. This conclusion is verified empirically by calculating the Spearman correlation coefficient between the economic growth rates of East Asian countries (regions). The growth of intra-East Asian trade and the formation of close economic ties, the convergence of economic and financial policies in East Asian countries (regions) and the global impact are the main reasons for the simultaneous changes in the economic cycle of East Asian countries (regions) at some periods. In East Asia (Region) differences in macroeconomic policies and economic conditions as well as the weakening of external shocks are the main reasons leading to the divergence of the economic cycle in East Asia in the first half of the 1990s.