Sichuan-Shaanxi area is located in the north and south sides of the transition zone of 800mm isohyet in China. The area is divided into three terrains including mountain,river,and grassland,which is the earliest implementation area of returning farmland to forest (grass). Based on the data of MODIS, temperature, and precipitation in 10 vegetation zones from the year 2001 to 2014,the methods of Sen+MK test and time-delay partial correlation are adopted. Combined with 4 geomorphologic types and 6 types of re-classified land use/cover data,the relationship between the NDVI of the vegetation in Sichuan-Shaanxi zone and climatic factors was discussed at three time scales : the comparison within annual growing season, interannual growing season, and non-growing season, the August with the best vegetation growth, and the correlation of eight periods, including May, June, July, August, May-June, June-July, July-August. The results are as follows: 1) The annually average temperature in Sichuan-Shaanxi,Shaanxi, and Sichuan increased linearly at 0.02℃/ 10a,0.01℃/10a, and 0.03℃/10a (at 0.01 significant level) ,which was lower than the national growth rate of temperature (0.22℃/10a) in last 50 years (19512001) ; 2)In the areas of Sichuan-Shaanxi, Shaanxi, and Sichuan, the correlation between vegetation NDVI and temperature,precipitation in the same season was consistent,but the correlation with that last season was inconsistent. The correlation between vegetation NDVI and the temperature, precipitation in last season was higher than that in the same season. Compared with the precipitation,the vegetation NDVI showed more negative correlation with temperature,and it was the most significant in Shaanxi ; 3) The change of temperature in Sichuan-Shaanxi region showed no same trends with global warming, and the vegetation growth was less or not affected by temperature. The influence of precipitation on vegetation growth in Shaanxi was greater than that of temperature. Temperature is a main limited factor in determining vegetation growth in Sichuan. The correlation between vegetation cover and temperature, precipitation was the most significant in grassland, woodland. and farming area.