Abstract: Upwelling is considered as one of the most important phenomena of the ocean currents. Based on a simple ROMS model, the responses of Qiongdong upwelling to different ENSO events from 2000 to 2013 (El Nino events in 2002 and 2009, and La Nina events in 2008 and 2010, respectively) are illustrated. It turns out that El Nino favors warm water temperature anomalies along the coast attributing to the weakened upwelling. On the contrary, cold water temperature anomalies develop with the strengthened upwelling during La Nina. It is demonstrated that the influence of different ENSO events was associated with sea surface winds and alongshore currents, both of which are not in favor of the development of upwelling during El Nino except for La Nina periods.