Analysis of measured data from five buoys emplaced in the southern Yellow Sea by a joint China and USA investigation team during November,1983 revealed the characteristics of current and water temperature variations there, and the highly sensitive response of residual current to the strong winds of a cold wave. Strong north wind forcing on the surface, induce strong southward residual currents at the every buoy station. During a weak wind period between two successive strong old waves, wind whatever direction always induced about 5-15cm/s northward residual currents. Strong cold wave in the west part of the southern Yellow Sea caused the sea surface level to be high in the south and low in the north. The measured maximum sea surface slope was 1.0×10+M952, During cold waves the dropping rate in the water temperature in the upper homogenous layer was thrice the averaged value in measurement periods. It was found that the heat loss of the water column was maximum at the boundary of the cold water mass. From the distributions of temperature and salinity and the heat lost the authors consider that the water will upwell along the boundary of the Yellow Sea Cold Water Mass in the late autumn as in summer.