Abstract: The objective of this study was to assess the content of chemical compounds( water,ash,lipid,protein,carbohydrate,amino acid,fatty acid and mineral) and the nutritive value of Cereus sinensis.The result showed that total protein content was 390 g / kg dry weight( DW),lipid content was 50 g / kg DW,ash content was 167 g / kg DW,carbohydrate content was 260 g / kg DW,fatty acid content was 7.5 g / kg DW,amino acid content was 277.9 g / kg DW for Cereus sinensis.Cereus sinensis contained variety of amino acid,and meet the amino acid requirements of adults with two exception,isoleucine and valine. Various minerals were contained in Cereus sinensis,such as Ca( 3650 mg /kg),Mg( 10900 mg /kg) and Se( 6.48 mg /kg).Glutamic acid and arginine were the main free amino acids which contributed to pleasant flavors.The taste activity valuation from high to low was GMP,IMP and AMP.Equivalent umami concentration was 1.05 g MSG /100 g. To conclude,Cereus sinensis was a good source of nutritive diet and had high flavor quality.