Abstract: The resource of Antarctic krill(Euphausia superba)is very abundant.But the content of fluorine in shrimp is very high and is a potential threat to the safety of the consumer.The excessive content of fluorine in Antarctic krill has become the bottleneck for its further utilization.To study the change of content of fluorine in different parts of Antarctic krill,the fluorine-selective electrode method was used to determine the content of fluorine.The results show the content of fluorine in different parts of Antarctic krill has obvious difference,the content of fluorine in shrimp shell is 538.67 mg/kg,shrimp head has 395.20 mg/kg,shrimp meat has 50.33 mg/kg and its content is about 10 percent of shrimp shell.The content of fluorine in the same parts of large Antarctic krill(longer than 45 mm),middle Antarctic krill(between 35 and 45 mm)and small Antarctic krill(shorter than 35 mm)have no obvious difference.The content of fluorine in shrimp,shrimp head and shrimp shell was decreasing when Antarctic krill was preserved at 4℃,but within 4 hours the content of fluorine in shrimp meat was increased,reaching a maximum at 59.67 mg/kg,then decreased.Antarctic krill were heated at 70℃ and boiling for 10 minutes,the content of fluorine in shrimp,shrimp shell and shrimp head had no obvious difference.Antarctic krill were preserved for 1 and 4 h at room temperature after heat treatment,the content of fluorine in shrimp,shrimp head and shrimp shell had little change.The content of fluorine in shrimp meat after heat treatment was higher than fresh shrimp meat.The contents of fluorine in shrimp meat of frozen and frozen cooked Antarctic krill were both higher than that of fresh Antarctic krill,and frozen cooked shrimp fluorine content of Antarctic krill is lower about 23 percent than the fluorine content in the frozen Antarctic krill.The experimental results show that proper processing in the ship can significantly reduce the content of fluorine in shrimp meat.This research will provide theoretical support to reduce the fluorine content in Antarctic krill and promote the development and utilization of the Antarctic krill.