Abstract: Using ECMWF daily reanalysis data, this paper investigates the linkages between the Antarctic Oscillation (AAO) and the tropospheric circulation anomalies of the Northern Hemisphere (NH) during Northern winter. Statistical analyses show that the AAO is associated with a weak but significant North Atlantic Oscillation (NAO)-like dipolar pattern accompanied by anomalous zonal-mean zonal wind over the North Atlantic lagging 25－40 days during boreal winter. Positive (negative) phase of the AAO corresponds to anomalous low (high) geopotential height over the Arctic and anomalous high (low) geopotential height over the subtropical Atlantic accompanied by anomalous westerlies (easterlies) in middle－high latitudes (45°N－65°N) and anomalous easterlies (westerlies) in middle-low latitudes (25°N－40°N) of the troposphere. These results indicate that the AAO has some linkages with the NH tropospheric circulation anomalies during Northern winter. And the simple dynamic diagnoses also indicate that the anomalous eddy momentum flux associated with the AAO tends to cause the emergence of the anomalous NH zonal-mean zonal wind.