The wind industry in China has experienced a rapid expansion of capacity after 2009,especially in northwestern China where the Chinas first 10GW-level wind power project located.In this paper,based on the analyses from Moderate Resolution Imaging Spectroradiometer(MODIS)LST data for period of 2005-2012,we furthers the recent works carried out in the wind farms located in USA(Zhou et al,2012)by investigating such impacts from the large-scale wind farms in Qiuquan China,where the topography and climate conditions are significantly different from those in USA.It shows the significant warming trends on LST at nighttime over the wind farm areas relative to the nearby non-wind-farm regions,but no noticeable impact is detected during daytime.The nighttime LST warming is strongest in summer and weakest in spring.These warming signals are relevant with the development of the wind turbines installation,since the spatial pattern couples well with the geographic layouts of wind turbines.It is then ruled out that the warming signal at nighttime here could be explained to some extent through the hypothesis about changes in atmospheric stability based on the early morning sounding data.The findings presented here could provide a scientific basis of the rational development of Chinas wind resources in the future.