Mesoscaleeddies play a pivotal role in oceanic material transport， energy exchange， and climate variability modulation. To understand their impacts on air-sea interactions in the Northwestern Pacific， this study analyzes satellite altimeter and scatterometer data （2006—2009） using eddy identification and composite analysis techniques， focusing on over 30 000 warm and cold eddies.Results demonstrate distinct air-sea parameter anomalies： warm （cold） eddies exhibit positive （negative） anomalies in sea surface temperature （SST， 1.64/-1.58 ℃）， surface wind speed （0.72/-0.58 m/s）， sensible heat flux （19.60/-39.25 W/m²）， and latent heat flux （40.98/-55.03 W/m²）； these atmospheric responses show strong linear coupling with SST anomalies， with maximum coefficients of 0.49/0.50 m/（s·℃） （wind）， 19.57/20.04 W/（m²·℃） （sensible heat）， and 33.61/32.96 W/（m²·℃） （latent heat）. Regional and seasonal variations in anomalies are modulated by background SST gradients and wind fields through vertical heat transport efficiency and surface roughness modification； synergistic mechanisms involving Ekman pumping， mixed layer adjustment， and boundary layer stability further contribute to these patterns. This study underscores the need for eddy-resolving coupled models to quantify mechanistic contributions and provides critical insights for improving air-sea parameter forecasting in eddy-active regions.