[Objective] The spatial autocorrelation and influencing factors of soil erosion were studied, in order to provide references for vegetation construction and reducing coarse sand into Yellow River.[Methods] Through geostatistics analysis and grey relation analysis, The spatial autocorrelation and influencing factors of soil erosion in Baojiagou watershed in bare feldspathic sandstone region were studied.[Results] ① There was a significant spatial autocorrelation of the soil erosion intensity in the watershed, with a Z of 136.87. ② Baojiagou small watershed was the most typical watershed among bare feldspathic sandstone region. The dominant landscape in the basin was bare bedrock landscape, followed by a large area of Hippophae rhamnoides artificial vegetation landscape. ③ The area weight fractal index distribution had the most significant influence on high-high agglomerations, with associated degree of 0.774. And slope had the strongest correlation with low-low agglomerations.[Conclusion] Terrain is the main factor that leads to the fragmentation of vegetation landscape and determines the intensity of hydraulic erosion. In the gentle terrain, the connectivity of vegetation landscape is the main factor restricting the development of soil erosion.