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The phenophase data and climatic element data in the same time period since 1979 are analyzed, and the variation regularity of winter wheat phenophases in the Huaibei Plain is studied. The results show that the five phenophases of reviving, setting, jointing, flowering, and ripening stages show an obvious advance trend, especially reviving, flowering, and ripening stages. It is found that among light, temperature, and water, temperature is the main factor that determines the variation of winter wheat phenophases in the Huaibei Plain. The correlation between precipitation and all local wheat phenophases does not pass the significance test. The sunshine duration has good correlation with the grouting process of wheat only during the grouting stage. The influences of the main climatic elements on the winter wheat phenophases in the Huaibei Plain are studied in detail, and some quantitative results are given.