Abstract: The primary nutritional components of Zophobas atratus Fab. were determined by the modern analysis technique.The results showed the content of moisture of pupa was higher than the larva and adult and the content of crude fat of the larva was higher than that of pupa and adult. The content of crude protein was very high and significant different between insect state.The fatty acid content was rich,it insect contained 3 kinds of essential fatty acids to human,the unsaturated fatty acid and must fatty acids content was rich,the content of it was higher than 60% and 20%,especially the content of oleic acid and linoleic acid was high;the amino acid content was rich,it contained 7 kinds of essential amino acid to human,the first limiting amino acid of protein was the amino acid containing sulfur Met ＋Cys and the essential amino acid soccupied43.59%、44.90%、44.68%、42.53%、42.27% of the total amino acids,more than the FAO/WHO recommend protein mode.