This paper reports the main results of oceanographic investigations of the shallow water front area outside the Subei (Northern Jiangsu Province)Shoal. The observations showed that the surface cold water and the shallow water front were restricted by an underwater sand ridge stretching northward. Comparison of the geostrophic current with the measured currerent showed that the dynamic height could be used to describe the scheme of water. movement in this area. A strong current in the upper layer near the front, the upwelling in the left shallow water area of the front, and the downwelling in its right deeper water area were all identified by the current data and the distributions of temperature and salinity. Notable variations of distributions of the surface cold water and the front were also found according to measured temperature data and remote sensing data from satellite.