This paper chose the typical surface flow constructed wetland of Lake Yanlong as study site. Through analysis of sedimentary physical properties, the hydrodynamic simulation of wetland system, the relationship between wind and resuspension, the estimation of resuspension of sediments throughout the year, this paper explored the resuspension characteristics of surface wetland sediments under dynamic conditions and the amount of nutrients resuspended in the process. Results show that the incipient velocity is between 18.54 and 22.62 cm/s within the depth of 0.3-0.5 m, but the maximum flow rate of water in and out of the actual wetland operation is 1.62 cm/s. It is much smaller than the incipient velocity. Therefore, the bottom disturbance caused by the internal flow of the wetland is difficult to form a large-scale resuspension. However, there is still a sediment resuspension effect inside the wetland. Wind field are the main influencing factors, while the wind is significantly affected by plants. The resuspension contribution during the plant germination period (Mar.-Apr.) and harvesting period (Nov. to the next Feb.) is significantly greater than the growth period (May-Aug.) and maturity period (Sep.-Oct.). When the wind speed is >4 m/s, the amount of resuspension (AR) increases obviously. The AR is also related to the water depth. The AR of 0.3 m water depth is higher than the AR of 0.4 m and 0.5 m with 12.48% and 18.67%, respectively; chemical oxygen demand (COD_Mn) is higher than 12.61% and 19.52%; total nitrogen (TN) is higher than 248.12% and 341.94%; total phosphorus (TP) is higher than 35.53% and 43.48%. The annual nutrient resuspension contribution was 2.8 kg/m² for SS,~0.47 kg/m² for COD_Mn,~0.15 kg/m² for TN, and~0.011 kg/m² for TP.