【Objective】 In the middle reaches of the Yellow River, the combined erosion of wind and water is intense in the sandy and coarse sand area. The entry of wind and sand into the gully is a key link connecting the processes of wind erosion and water erosion, providing a basis for understanding the combined erosion process of wind and water. This study takes the Shajiawan small watershed as the object, aiming to reveal the characteristics of its wind-sand environment and the process of its entry into the gullies. 【Method】 Based on the field monitoring and indoor analysis of the sediment collector, the sediment transport potential (DP) of the Shajiawan small watershed was calculated, and the actual wind erosion potential (DPa) was calculated by introducing the rainfall suppression effect. The function fitting method is adopted to estimate the wind-sand settlement in the gully. Combined with the soil particle size characteristics of the gully slope, the wind-sand transport path and sedimentation characteristics are systematically analyzed. 【Result】 (1) The Shajiawan small watershed is a high wind energy environment. The annual sediment transport potential is 441.95VU, the directional variability index is 0.42, the direction of the annual synthetic sediment transport potential is perpendicular to the main channel, and the annual wind erosion modulus of the channel is -0.40t·ha?1. The sediment transport potential and the wind-sand settlement in the gullies are the highest in spring, accounting for 53.74% and 40.25% of the whole year respectively. (2) The annual actual wind erosion potential (DPa) considering rainfall suppression was 293.04VU, which was 27% lower than the sediment transport potential. The suppression effect was most significant when high wind speed and heavy rainfall occurred simultaneously. (3) As the slope position decreases, the composition of the sediment changes from silt (76.20%) to mainly fine sand (74.70%), the average particle size changes from 5.52φ to 2.89φ, the soil particles become significantly coarser, and the movement mode changes from suspension to jump. 【Conclusion】 The process of wind-sand entering the gully is that under the combined effect of high wind energy environment and gully terrain obstruction, sediments enter the gully in a leaping manner.