As important topographic factors, slope aspect and elevation determine the heat and water distribution in forest land conditions. In order to reveal the climatic factors that restrict the radial growth of Minjiang fir (Abies fargesii var. faxoniana) before and after the abrupt warming in western Sichuan and the response patterns in slope aspect and elevation, twelve standard chronologies of Minjiang fir were constructed on four slope aspects (NE, N, NW, and W) and three elevation gradients (≥ 3650 m) by using dendroecology technology. Using Pearson correlation analysis and regression analysis, we analyzed the changes in the main climate factors limiting the radial growth of Minjiang fir before and after the warming of the 1980s and the trend of radial growth after the warming. Before the warming in 1980, the growth of Minjiang fir was restricted by the lowest temperature and precipitation in the growing season (July) and the highest and average temperature in the winter of the previous year (October-November), while the increase of temperature in spring (March) and more precipitation in the growing season (May) were not conducive to the growth of Minjiang fir. After warming, the radial growth of Minjiang fir was positively correlated with temperature in most months at the middle elevation of the NE slope and the low elevation of the W slope, and the treelines of four slope aspects. All the radial growth of Minjiang fir at the above sample sites showed increasing increments. Before the warming in 1980, the climatic factors restricting the radial growth of Minjiang fir at different sampling sites were consistent, i.e., the slope aspects and elevations had little interference and influence on the correlation between the radial growth and climate data. The warming promoted the growth of Minjiang fir in the treelines of all slope aspects. The radial growth of Minjiang fir on the partial-sunny slope aspect showed positive feedback to the warming at a more extensive altitude range. The study is of great significance for predicting the growth and distribution of Minjiang fir in different slopes of western Sichuan under the background of future climate change.