In this study,based on the fog-haze dataset from the National Meteorological Information Center,and NCEP/NCAR reanalysis data and sea ice concentration(SIC) dataset from the British Atmospheric Data Centre,for the timespan of January 1981 to February 2017,the effects of Barents-Kara Seas' ice in both autumn and winter on the East Asian winter monsoon and changes of winter fog and haze events in eastern China have been discussed.The results suggest the following:The changes of the Barents-Kara Seas' ice since autumn have greatly affected the strength of the zonal circulation and the East Asian trough Asian over mid-high latitudes and the intensity of the East Asian winter monsoon.The Barents-Kara Seas' ice is one of the important factors affecting the winter haze events in eastern China,but it has less significantly affected the winter fog weather.Less sea ice in the Barents-Kara Seas strengthens zonal circulation over mid-high latitudes of Asia,while the East Asian trough and influence of the East Asian winter monsoon are weakened,which provides favorable conditions for the atmospheric pollutants gathering in the horizontal direction.Meanwhile,positive temperature anomalies exist in the middle and lower tropospheres,and the difference between the temperature of the higher layer and surface decreases,which is not conducive to the development of convection,thereby causing the the atmospheric conditions to be more stable,and providing favorable conditions to the atmospheric pollutants' gathering in the vertical direction.The influence of the both horizontal and vertical directions leads to haze weather in eastern China.