Abstract: From field investigation and comparative analysis of topsoil texture in beijing plain region it will be that the ground surface in yanqing basin is charaterized by gravel, while the alluvial inter-fluves in Beijing plain is predominated by silty loam. As for the sandy soils they mainly distributed in the wenyu, Chaobai and Yong ding River basins, with the last one taking up largest area. The distribution region of bliwnsand land is generally consistent with that of sandy soils, however, their finer particles are being blown away owing to long-term of wind erosion and irrational cultivation activities. All of these factors made the surface material coarser and coarser.