基于对 ＮＣＥＰ／ ＮＣＡＲ再分析资料以及其他资料（ＯＬＲ，降水和气温等）的分析研究，结果表明东亚和西北太平洋地区的对流层环流和气候变化都有明显的准两年振荡（ＴＢＯ）特征。同时，异常东亚冬季风可以影响次年夏季的大气环流和气候变化，特别是在东亚地区；而异常东亚冬季风和ＥＮＳＯ循环间又有明显相互作用：持续的强（弱）东亚冬季风通过海─气相互作用可以激发 Ｅｌ Ｎｉ　ｏ（Ｌａ Ｎｉ　ａ）， Ｅｌ Ｎｉ　ｏ（Ｌａ Ｎｉ　ａ）反过来又可通过遥相关或遥响应而导致东亚冬季风偏弱（强）。强或弱的冬季风和ＥＮＳＯ循环是相互衔接在一起的，因此可以认为异常东亚冬季风与ＥＮＳＯ循环的相互作用是ＴＢＯ对流层准两年振荡）的基本原因。 Based on the analysis of the NCEP / NCAR reanalysis data and other data (OLR, precipitation and air temperature), the results show that there are obvious quasi-biennial oscillations (TBO) in the tropospheric circulation and climate change in East Asia and the Northwest Pacific. Meanwhile, the anomalous East Asian winter monsoon can affect the atmospheric circulation and climate change in the following summer, especially in East Asia. However, there is obvious interaction between the abnormal East Asian winter monsoon and the ENSO cycle: the continuous strong (weak) East Asian winter monsoon passes through the sea - The gas interaction can activate La Ni a, which in turn can weaken (strong) the East Asian monsoon by teleconnection or teleconnection. Strong or weak winter monsoon and ENSO cycle are interlinked, so we can consider that the interaction between the anomalous East Asian winter monsoon and ENSO cycle is the basic reason for the quasi-biennial oscillation of the TBO troposphere.