Wind erosion of tailings is an important factor affecting ambient air quality and human health. In this study, the tailings of copper-nickel tailings pond are taken as the research object, and the effects of wind speed, crust quantity and moisture on the characteristics of wind erosion rate and wind erosion particles of tailings were studied by wind tunnel experiment. The results show that the wind erosion rate, wind erosion particles and collision energy of tailings increase as the wind speed increases, but decrease with the increase of moisture and crust quantity of tailings. The wind speed of first particle collision increases with the increase of moisture and crust quantity of tailings. Wind erosion particles of tailings are mainly concentrated within 3 cm height, accounting for more than 50% of the total wind erosion. Under the condition that the crust is not broken by the wind, crust quantity has the better resistance to wind erosion than moisture. Therefore, wind erosion resistance of crust is related to wind speed and crust quantity. Any crust quality can effectively resist wind erosion at wind speed below 10 m/s, but more than 25 g and 50 g crust are required to resist wind erosion at wind speed of 12 m/s and 14 m/s, respectively. Moisture of tailings should higher than 2.72% for better wind erosion resistance under the experimental wind speed.