Abstract: Biochemical compositions of muscle were studied in Gobiocypris rarus.The water content is 79.12 - 79.6% % of wet materials.Protein content is 68.39 - 70.20%, fat content 20.11 - 20.65%, ash content 15.88 - 16.04% of dry materials.Energy values is 19.91 - 20.84kJ/g.There are seventeen amino acids detected in muscle.The percentages of the essential, polar, non polar amino acids in total amino acids represent 19.45 - 20.13%, 17.23-17.45%, and 17.51 - 18.16%, respectively.There are abundant Ca, Na, P, Mg, Zn, Fe elements in muscle.Biochemical compositions of feed of Gobiocypris rarus also were determined.