In order to access the speed and degree of social emergent response to extreme low temperature,raining and snowing,icing disasters quantitatively and supply a reference in defending similar disasters in the future,a composite index is made up of the position of related reports,the number of related reports and the number of the special columns collected from a predominant daily newspaper (Chutian Golden Newspaper) in Hubei from Jan.9th to Feb.5th in 2008.Its daily variation and its relationship with meteorological factors are analyzed,then some meteorological evaluating (forecasting) equations for composite index are established and the five grades of disasters can be divided with corresponding meteorological index.The results show:1) The speed and degree of social emergent response to extreme low temperature,raining and snowing,icing disasters can be well accounted for by the composite index,and peaks and valleys of the index are highly accordant with the variation of snow depth，and the process of the 3 gradual aggravation of the disasters and the gradual deepening of people’s recognition can also be clearly shown.2) The index has a significantly positive correlation with snow depth,and a negative correlation with low temperature,and no correlation with moisture conditions or daily snowfall,but a positive correlation with accumulated snowfall in the previous2 or 3 days.The correlation between the index and the accumulation of snowfall or lowtemperature can be significantly increased that can explain the limited destruction of shortterm sleeting and lowtemperature and the serious harm to society only by longterm snowfall,deep snow and extreme low temperature.3) 4 meteorological evaluation (forecast) equations for the index is established and the five grades of disasters can be divided with corresponding meteorological index.When snow depth is above 8.0(19.0)cm,or the accumulative minimum temperature is below -7.0（-43.0） ℃,or the accumulative snowfall is over 24.0 (54.0)cm,serious (extreme serious) destruction will then occur,and the degree of social attention and response to the disasters will begin to (obviously) increase.