Abstract:The four different strains of freeze-dried squid sturgeon's bone marrow were used as raw materials.Through the determination and analysis of the nutrient composition of different strains of squid sturgeon's bone marrow，the nutritional differences of squid sturgeon's bone marrow between different strains were obtained.The basic nutrient composition，amino acid composition，fatty acid composition and inorganic element composition of Russian male，Russian female，Chinese sturgeon and Hybrid were studied.The results showed that the crude protein content of Russian female carp reached 76.12 g/100 g，and the content was the highest，which was significantly different from the other three sturgeon's bone marrow （P<0.05）.According to the essential amino acid index （EAAI）value of essential amino acids，the amino acid composition of Russian male and female mites was more balanced and the nutritional value was higher.The unsaturated fatty acids of Chinese sturgeon and Hybrid account for about 80% of total fatty acids，and mainly polyunsaturated fatty acids.It could ensure the normal physiological function of cells，and was more beneficial to human health；the mineral elements of four kinds of squid sturgeon's bone marrow were rich，and the contents of major elements such as K，Ca and P are obvious，and the contents of heavy metals such as Cu and Cd were significantly lower than the limit.Standard，methylmercury，Pb were not detected.