In order to reveal variation characteristics of vegetation net primary productivity (NPP) in Bortala-Jinghe River Basin of Xinjiang and its response to climate change,temporal and spatial variations of vegetation NPP value in this area from 2000 to 2015 were analyzed based on MOD17A3 remote sensing data,and the correlation between vegetation NPP value and main climatic factors of annual mean temperature and annual mean precipitation was analyzed.The results show that from 2000 to 2015,the means of vegetation NPP values of four kinds of land cover types of forest land,cultivated land,shrub land,and grassland are 321.1,254.1,190.3,and 131.7 g·m~(-2),respectively,while the mean of vegetation NPP value of the whole research area is 0.0-393.7 g·m~(-2),and its spatial distribution shows a pattern of high in center and low in around;vegetation NPP value of 57.22% of the area increases,that of 19.90% of the area decreases,while that of 22.88% of the area remains unchanged.The correlation analysis result shows that vegetation NPP value of 53.45% of the area shows a negative correlation with annual mean temperature,while that of 23.67% of the area shows a positive correlation with annual mean temperature;vegetation NPP value of 41.65% of the area shows a positive correlation with annual mean precipitation,while that of 35.47% of the area shows a negative correlation with annual mean precipitation.Notably,vegetation NPP value of 9.95% of the area shows a significantly positive correlation with annual mean precipitation,and these areas are all grasslands in mountainous area on both sides of the upper and middle stream of Bortala River.It is suggested that from 2000 to 2015,vegetation NPP value in Bortala-Jinghe River Basin of Xinjiang shows a tendency to increase in total;annual mean temperature and annual mean precipitation have a certain effect on growth of vegetation in this area,and annual mean precipitation has the most significant effect on vegetation NPP value of grasslands in mountainous area on both sides of the upper and middle streams of Bortala River.