Abstract: The composition and distribution of atmospheric aerosols and gaseous organic amines over the Southern Ocean and the Antarctic nearshore area were investigated for the first time during the 36^th CHINARE by online observation and their source characteristics were analyzed. Results show that gaseous trimethylamine and dimethylamine are the main forms of organic amines in the Southern Ocean, with mean values of (104.0±285.2) and (3.5±6.0) ng/m³, respectively. The concentrations of organic amines in the Antarctic near-shore area are significantly higher than the average oceanic concentrations, for example, the mean values of gaseous trimethylamine and dimethylamine over Prydz Bay reach (289.0±396.6) and (5.6±16.1) ng/m³, respectively. Gaseous trimethylamine, dimethylamine and ammonia over the Southern Ocean showed good linearity in different regions, indicating their homology. From the source analysis, the atmospheric organic amines over the Southern Ocean are mainly influenced by marine biological activities, but in the sea ice edge area and the Antarctic near-shore area, animal activities such as penguin emissions can lead to a significant increase in the concentration of organic amines in the atmosphere.