For the representation of the winds over the East China Sea, the paper investigated the applicability of dynamically downscaling the NCEP FNL (Final Analysis) data by the weather and research forecasting (WRF) model. Three numerical experiments were conducted: 1) simply 1-year control integration of WRF (i.e., YEAR); 2) update the FNL initialization data every 5 days (i.e., 5DAY); and 3) update the FNL initialization data every 10 days (i.e., 10DAY). The results showed that all the three experiments were able to simulate the winds reasonably, especially in winter, and the experiment 5DAY preformed best among them. Moreover, the paper added the spectral nudging scheme into the three experiments and explored its effects on each experiment.