Abstract: To screen high quality millet and improve the composition of essential amino acids in millet powder,three representative millet varieties of North China-“Qinzhouhuang”millet,“Peach blossom”millet and“Longshan”millet- were chosen as studying materials. These objectives were achieved by two steps: evaluating the integrated nutrition index of protein,fat,reducing sugar and fatty acid,and then comprehensively analyzing and assesing Lysine using CS,AAS and EAAI.The results indicated “Qinzhouhuang”millet won in the level of all major nutrients over the other two varieties.Furthermore,the structuring of essential amino acids in standard protein was most alike to that in the compound millet powder obtained by mixing this variety and Quinoa flour with the ratio of 1∶2,which made it much more nutritious.