Abstract: Traditionally,Alum is needed during the processing of jellyfish,resulting in high residual aluminum content in jellyfish products.In order to study the aluminum adsorption behavior of jellyfish,jellyfish was used as the main research object.Six representative seafood samples,including clam,sea cucumber,oyster,razor clam,squid and shrimp were selected as the control.The aluminum adsorption capacity of jellyfish soaked in 1% alum solution for 7 days was determined,while the amino acid composition and content of each seafood were also analyzed.The results showed that the amount of aluminum adsorbed by jellyfish was significantly higher than that of other seafoods,up to 2.11×10⁴ mg/kg (dry basis).Amino acid composition analysis showed that the lowest total amino acid content of jellyfish was 0.015 7 g/100g,indicating that jellyfish had strong aluminum adsorption capacity under very little dry matter,and this strong aluminum adsorption capacity was related to the composition of jellyfish amino acid,especially with the high glycine,glutamic acid,aspartic acid,and proline ratio,as well as the low composition of phenylalanine,leucine,and methionine ratio.