Abstract: ObjectiveTo explore the nutritional value of cordy ceps.MethodsTo determine the content of protein,moisture,fat,fibre and ash by adopting chemical assay,to assay the essential amino acid content of protein by using Hitachi 835-50 automatic amion-acid analyzer the male ablactation Wister rat were fed by the food according to AOAC(protein 10%) for 28d,azote metabolizing test was conducted in the last 4d.ResultsThe net digestibility,biological value,net utilization rate and efficacy odds of cordyceps have nonsignificance compared with the casein bundle and the bean flour bundle(P>0.05).ConclusionCordyceps is edible insets protein with abundant nutritional value.