Abstract: Per-/polyfluoroalkyl substances (PFASs) are one of typical emerging pollutants, which exist widely in coastal environments. Because their environmental persistence, long-distance transportation potential and toxicity, environmental occurrence and behaviors of PFASs is one of focus in the fields of environmental science research, and has attracted the attention of environmental managers. Based on the data reported in the literature, the levels and composition profiles of PFASs in seawater, marine sediments and marine organisms in China, Europe, America, Japan and South Korea were compared and discussed. The spatial distribution and characteristics of PFASs in coastal environments were summarized from the international and domestic perspectives, and the primary sources of PFASs into the sea were discussed. The future research priorities of PFASs in coastal environments were prospected. The results showed that the concentrations of PFASs in the Bohai Sea and the Yellow Sea were consistent to those in the seawater of Japan and South Korea. The levels in the East Sea and South China Sea were close to those in Europe and the United States, and were lower than those in Japan and South Korea. The concentrations of PFASs in sediments of Europe and America were similar to those in the Bohai Sea, but higher than those in the Yellow Sea, East Sea and South China Sea. In terms of composition profiles, perfluorooctanoic acid (PFOA) was relatively high in seawater of China, Japan and South Korea, and perfluorooctane sulfonate (PFOS) was main component in seawaters of Europe and America. The components in sediments in China, Japan and South Korea were dominated by PFOA and PFOS, while those in Europe and America were PFOS and short-chain PFASs. PFOA and PFOS were dominant in Chinese marine organisms, while PFOS and other long-chain components were dominant in European and American marine organisms.