Abstract: In order to research the impact of climate change on winter wheat overwintering stage of Linyi, reasonable response to climate change, to improve local wheat production capacity, the author analyzed the wheat overwintering period and variations of meteorological factors in Linyi City by using statistical analysis method, and made an assay of the influence of the main meteorological factors during the wheat overwintering period to exploit the method of gray correlation degree analysis. The data included measurements and meteorological observations of wheat developmental phase from 1981 to 2010. The results showed that many meteorological elements changed in varying degrees and characteristics of phases were obvious during the stage. In the research period, daily average temperature raised 0.3℃/10 a, whose warming trend was evident. Precipitation average variation trend rate was -2.8 mm/10 a, and for sunshine hours, it was 32.9 h/10 a. Both of them were inclined to decrease. The beginning of wheat overwintering period delayed 1.5 d/10 a, in average while recovering date advanced 1.6 d/10 a. It led to shorten 3.3 d/10 a in overwintering period. Sunshine hours were the main meteorological factors during overwintering period.