Based on sea ice concentration data from Hadley Center of UK, the effects of autumn Arctic sea ice change on winter temperature in the middle and low reaches of the Yangtze River (MLRYR) had been analyzed through synthesis, correlation and other statistical methods. It was found that the variation of sea ice concentration in the north of the Laptev Sea and the east of East Siberian Sea could be used as a precursive signal to predict winter temperature in the MLRYR. When sea ice concentration in the north of the Laptev Sea and the east of East Siberian Sea was higher in autumn, the meridional gradient of two-meter temperature was bigger in winter in midland of the mid-high latitudes of Eurasia, and the blocking high in the Ural Mountain was weaker, there was mainly zonal circulation over the mid-high latitudes of Eurasia, and air temperature was higher in the MLRYR, and vice versa.