Abstract: The aqueous quality of the melted sea-ice water and surface seawater at 11 same stations in the phoca largha breeding area was investigated in 2020. According to the research data, this project analyzed the quality of the melted sea-ice water, discussed the source of involved pollutants and compared with them in the seawater at the same station.The results turn out that the contaminant concentration of the melted sea-ice water is significantly higher than that of the surface seawater at the same station. Besides, Pb and Zn are proved to be the dominant negative factors that affect the heavy metal pollution index of the sea-ice. The sound correlation reflected between heavy metals as well as petroleum and heavy metal in the water indicated the similar sources and transferring regularity of the involving pollutants and the main source of pollutants should be in the northern estuary and coastal ports. There are many irregular high value areas of pollutant concentration in the northern estuary and the central sea area and no apparent correlation between sea-ice water and seawater at the same station.