Abstract: The nutrients of Gannan yak meat and Chinese simmental meat were determined and analyzed in study,designed to provide the basis for the development of high quality meat and guide consumers to have a reasonable diet.The results showed that: Gannan yak meat protein content was 2.05% higher than Chinese simmental meat( p < 0.05),fat content was 0.47% lower than Chinese simmental meat( p < 0.05),total sugar and cholesterol content had no significant difference between the two samples( p > 0.05),Fe,Ca,P,V_E content were 0.74,0.83,7.11,0.12 mg /100 g higher than Chinese simmental meat,respectively( p < 0.05). Unsaturated fatty acid content of Gannan yak meat was 4.10% higher than Chinese simmental meat,in which content of γ- linolenic acid,α-linolenic acid,EPA and DHA were significantly higher( p < 0.01). Total amino acids and essential amino acid content of Gannan yak meat were higher than Chinese simmental meat,in which Threonine,Valine,Isoleucine,Glutamic acid,Cystine and Leucine were significantly higher( p < 0.05).The amino acid scores of Ile were 81.53 and71.17 respectively.Compared with Chinese Simmental meat,nutrients composition and content of Gannan yak meat were more aligned with meeting consumer demand for higher quality,higher nutritional value of meat.