[Objective] The grain size distributions and erosibilities of sandy soils in Northwestern Shanxi Province were studied to provide basic data and scientific evidence for rational utilization of land and effective prevention to control wind erosion.[Methods] We studied 0-20 cm surface soils of different land use patterns in Northwestern Shanxi Province by extracting all types of potential erosive particles. Land use included abandoned land, corn field, artificial forest and bare land.[Results] ① Soil particle size of sandy land in northwest of Shanxi Province were mainly composed of very fine sand (0.125~0.063 mm) and silty sand (0.063~0.002 mm), which were more than 70% of the total sand. ② The silty sand contents of abandoned land, corn land and artificial forest were 52.86%,48.81% and 43.52% respectively. Bare land has a high fine sand content of 45.64%. ③ The contents of erodible particle (0.25~0.056 mm) of the four land types increased in the following order:abandoned land (47.18%) < corn field (49.67%) < artificial forest (55.83%) < bare land (68.80%).[Conclusion] Different land use patterns would affect soil particles' grain size distributions and make changes in soil properties. Eventually these changes would lead to different soil wind erosion possibility. Bare land was the main field which should pay more attention to prevent wind erosion. Protection measures such as surface cover should be taken to reduce wind erosion.