Abstract: The construction of PV power stations may change the growth status of vegetation,but it is currently unclear how PV power stations affect the spatial aggregation of vegetation. This paper takes the Northwest China as the research area,and uses the OLI remote sensing image dataset of Landsat 8 satellite to obtain the range of PV power stations in the study area in 2015 and 2020. Combined with the MODIS normalized difference NDVI dataset,the changes in vegetation spatial aggregation degree and spatial aggregation type in the study area in 2000,2015,and 2020 are compared,and the impact of PV power stations on vegetation spatial aggregation in the region is judged at a regional scale. The research results show that:1) PV power stations can increase the vegetation spatial aggregation degree in the surrounding area, and the aggregation effect is significant within the 0.0～0.5 km buffer zone of PV power stations. 2) The construction of PV power stations reduces the non aggregation pattern of NDVI,and PV power stations will promote the aggregation of NDVI towards high and low values in the surrounding areas. 3) Within the 0.0～0.5 km buffer zone of PV power stations,in arid and semi-arid areas, the construction of PV power stations is conducive to plant growth;In extremely arid and semi humid areas,the construction of PV power stations is not conducive to plant growth.