By the methods of dendrochronology,response analysis and multi-linear regression analysis,the climate connotation were uncovered,which is contained in the Abies fargesii tree-ring width in the major ridge of the eastern Qinling Mountains in Niubeiliang Nature Reserve. Both of Abies fargesii standardized chronology and residual chronology are of high characteristic values,which indicated that the tree-ring materials contain high environmental information. Through correlation analysis,it is discovered that temperatures in spring and summer are the dominant factor for the radial growth of Abies fargesii. The temperature averaged from January to August, especially from January to February,has positive effect on the growth of Abies fargesii. The temperature averaged from previous October to November also has effect on matter accumulations of Abies fargesii. Precipitation is not the major limiting factor for the growth of tree,but high precipitation in January and February might slow down the organization of formation for Abies fargesii,whereas,the precipitation from February to April had positive effect on the accumulation of photosynthesis product. The multi-linear regression model is available to simulate the relationship between climate factors and the chronology. It is proved via the analysis of typical year that the variation in the tree-ring annual width is due to a mutual and counterbalance effect of air temperature and precipitation in growth season. It is predicted that the Abies fargesii forest may migrate to higher altitude. This study provides a basis for studying the ecological pattern evolution under the process of climate change in Qinling Mountains.