Abstract: The edible parts of Ommastrephes bratrami are divided into three sections:tubes, fins and tentacles which were chemically determined. The main flavour components,betaines, inorganic ions such as K+, Na+, Ca2+, Fe2+, Zn2+, PO3-4and Cl- and freeamino acid in the raw Ommastrephes bratrami were extracted by hot water, 80% ethanol,cold water or 80% ethanol after cold water.Comparison among the four extract methods above indicated that hot waterextraction and 80% ethanol extraction are better than the oth-er extractions.