Abstract: By analyzing and comparing the similarities and differences of the main nutrients and amino acid composition of C.songaricum in the four major producing areas in the northwest,it provides a scientific basis for the in-depth development and utilization of C.songaricum resources in China.In this study,the contents of seven kinds of nutrients,total amino acids,polysaccharides,reducing sugar,sucrose,crude fat,crude protein and ash,and the composition and content of 17 amino acids.The results showed that there were abundant nutrients and 17 kinds of amino acids in the C.songaricum of each producing area.However,there are significant differences in the content of nutrients and amino acids in C.songaricum from different habitats.The total sugar,reducing sugar and protein content of  C.songaricum in the four producing areas were higher,the total sugar content was highest in Qinghai and Gansu,the protein content was highest in Xinjiang,and the reducing sugar content was highest in Inner Mongolia.The total amino acid content of Cynomorium in each producing area reached 9.31%-13.37%,and the essential amino acid content reached 1.52%-2.12%.

Key words: C.songaricum, nutrient composition, amino acid composition.