Abstract: Based on 3 kinds of woody plant's phenology observation data for Salix matsudana, Ulmus pumila and Populus simonii Carr and simultaneous meteorological data from meteorological observatory of agriculture and husbandry in Inner Mongolia from 1983 to 2012, linear tendency estimation and Pearson correlation coefficient methods were used to discuss the effects of climate change on phenophase of woody plants at the northern foot of Yinshan Mountain.The results show that in recent 22 years, the date of bud appearing and the ending date of defoliation exhibited an advanced trend for Salix matsudana, Ulmus pumila and Populus simonii Carr at the northern foot of Yinshan Mountain.In addition, the ending date of defoliation was ahead more than the date of bud appearing with advanced days of 2.9 d, 3.6 d, and 4.6 d per 10 years, respectively.Growing season was shorten with the average growing season was 182 d.The temperature was the key meteorological factor affecting the date of bud appearing of Salix matsudana, Ulmus pumila, and Populus simonii Carr.The date of bud appearing advanced 4.1 days when temperature in spring increased 1℃.However, the ending date of defoliation was more sensitive to precipitation, and water conditions were the main limiting factor for the ending date of defoliation of woody plants at the northern foot of Yinshan Mountain.