［Objective］ The law of soil wind erosion in degraded bare patches in alpine meadows was examined to provide a scientific basis for vegetation restoration and ecological and environmental protection in degraded meadow areas. ［Methods］ Bare patches degraded by plateau pika activity in Henan County， Qinghai Province， China were selected as research subjects. In-situ wind erosion simulation experiments were conducted under three wind speeds of 9， 12， and 15 m/s for degraded bare patches with different vegetation cover levels （0%， 20%， 40%， 60%， and 80%） to investigate the effects of vegetation cover on soil wind erosion under varying wind speeds. ［Results］ ① The soil wind erosion rate for degraded bare patches showed a trend of initially sharp decline followed by stabilization over time （p<0.05）. During the 60 min wind erosion experiment， the first 10 min was the sensitive period for changes in the soil wind erosion rate. ② Under all three wind speeds， there was a significant negative exponential relationship between vegetation cover and total sediment transport （R² = 0.98）. The larger the absolute value of the exponential coefficient， the weaker the inhibitory effect of vegetation cover on wind erosion at higher wind speeds. ③ As vegetation cover increased， the sediment transport within the 0—5 cm height range significantly decreased， and sediment transport at all vegetation cover levels gradually decreased with increasing height. ［Conclusion］ Increasing vegetation cover can effectively reduce wind erosion rates and sediment transport heights. However， at higher wind speeds， the inhibitory effect of vegetation cover on wind erosion significantly weakened. The critical threshold for vegetation cover to inhibit soil wind erosion was approximately 40%. As vegetation cover continued to increase， the marginal benefits of reducing wind erosion gradually diminished.