Due to the lack informations on Biochemical of jellyfish in the Syrian waters, the aim of this paper is determining the nutritional value and organic content for each of the species Rhopilemanomadica, Pelagianoctiluca and Aequorea forskalea, and compared the biochemical composition of the three types , so the comparison showed clear differences in the content of organic material, the sugar were the most concentrated in the three species and lipid comes in second class, and then followed by the protein content and organic carbon.A.forskalea was the most containing sugar and R.nomadica the most lipids content, and P.noctiluca were the most protein content.R.nomadic was the highest content in organic carbon, R.nomadica and P.noctiluca were convergent contents of organic phosphorus, while the least contain of organic nitrogenwas in A.forskalea.