Abstract: According to the investigation data of shellfish (Saccostrea cucullate) in the middle southern coastal areas of Fujian Province from 2009 to 2014, the concentrations and distributional feature of petroleum hydrocarbon (TPH) were studied.The result showed that the average concentration of TPH in S.Cuculleton was ranked as:Weitou Bay> Quanzhou Bay> Xiamen Bay> Foutan Bay> Dongshan Bay> Dagang Bay> Jiuzhen Bay> Meizhou Bay> Zhao'an Bay.The content of TPH in Weitou Bay has exceeded the standards seriously.The concentration variation of TPH was undulating in each monitoring coastal areas, which in the year of 2010 and 2013 TPH content in S.Cucullata was higher.The pollution index of TPH ranged from 0.08 to 23.30.About 54 samples were tested in six years, the severe pollution of which accounted for 26%, whereas mild case accounted for 37%, and with the 37% of the samples were no detected.