In order to better guide the development and utilization of ice and snow resources in western Tianshan mountains,it is of great importance to study the law of snowline change.With the help of the MODIS data from 2000 to 2016,the weather data from 1959 to 2015,and the DEM data,we studied the temporal and spatial variation of the snowline in Kashi river basin by using the remote sensing snowline method,the climate snowline method,and the fields of snowline altitude method.The results are as follows:(1)According to the remote sensing snowline method,the multi-year average(8 days)and the annual average snowline showed a rising tendency in the research area;on the seasonal scale,the snowline showed a rising tendency in spring and winter,and showed a declining tendency in autumn and summer.Based on the climatic data,the annual average snowline had agood response to precipitation,and the spring snowline had a good response to temperature.(2)According to the climate snowline method,the climate snowline was higher than the remote sensing snowline.From the climate perspective,the climate change caused the snowline to increase year by year.(3)It is shown from the analysis of the fields of snowline altitude that the distribution of the snowline is mainly influenced by topography.With the 2 000 mheight as the dividing line,the two parts of the fields of snowline altitude have different responses to precipitation.