[Objective] The benefits of a reed-sand barrier in a photovoltaic plant with regard to wind velocity, transported sand volume, and transported sand diameter were studied in order to provide a theoretical basis for the prevention and control of sand damage caused to the 200 MWp photovoltaic plant in Hobq Desert, Northern China.[Methods] The wind speed after placing reed-sand barrier (20, 50, 100, 200, 310 cm) and sediment transport (at a height of 0—30 cm) near the surface of the photovoltaic plant were measured. Then, the trend of indicators such as the wind speed profile, surface roughness, friction speed, average jump height, wind prevention, and sand fixation benefit were analyzed.[Results] ① The wind speed profile of the reed-sand barrier followed a logarithmic increase function and the goodness of fit (R²) of the regression was > 0.99. The aerodynamic roughness and shear velocity above the reed-sand barrier were 3.47—3.79 times and 1.39—1.54 times higher, respectively, than those above bare sand. The wind break function at a height of 20 cm was the maximum (21.72%). ② The total sediment transport of the reed-sand barrier was only 6.95% of that of the bare sand, and the sand-fixing benefit was 93.05%. More than 90% of the total sand transport flux above the bare sand was distributed within a height of 0—8 cm, whereas only 51.39% of the total sand transport flux above the reed-sand barrier was distributed at this height. Therefore, the sand flux above the reed-sand barrier tended to move towards the high layer.[Conclusion] The reed-sand barrier acted as an effective windbreak and provided sand fixation by reducing the near-surface wind speed and intercepting sand transport. Thus, the reed-sand barrier is an effective protective measure for photovoltaic tracks in sandy areas.