This paper reported molecular marker of Stomopholus meleagris and Rhopilema esculentum in order to study physiological,biochemical,pharmacology characters and clinical diagnosis of the cnidoblast animal. 8 isozymes were studied by vertical polyacrylamide gel electrophoresisin two jellyfishes with different toxin of and specific expression in cnidoblast and medusa was recorded. The results showed the superoxide desmutase (SOD) definited as organism defence enzyme,it can not be the marker of toxin. Esterase (...