[Objective] The structure form of existing sand barriers was optimized to maximize the sand retention effect, the characteristics of wind and sand flow of inclined inserting-type sand fences along a railway were studied in order to provide a relevant design reference and scientific basis for the prevention and control of wind and sand disasters.[Methods] Based on the Eulerian two-fluid unsteady model, numerical simulations were conducted on inclined inserting-type sand fences with different inclination angles of the insert plate (15°, 30°, 45°, and 60°) but the same porosity (30%).[Results] ① The inclination angle of the insert plate gradually increased, the range of the windward side deceleration zone did not change significantly, and the range of the upper acceleration zone and the leeward side vortex zone gradually increased. The tendency of the windward side airflow to bend downward gradually increased, and the angle between the airflow moving upward on the leeward side and the horizontal wind direction gradually increased. ② Under different wind speeds, the wind speeds around the inclined inserting-type sand fence were U-shaped curves. For the same wind speed, the minimum wind speed in the leeward vortex area was negatively correlated with the inclination angle of the plate.[Conclusion] As the inclination angle of the inserting plate increased gradually, the sand on the windward side gradually increased, and the sand on the leeward side gradually decreased. However, the sand in the 1 H range on the leeward side gradually increased. The distance between the main sand distribution on the leeward side and the sand barrier gradually increased.