In order to study the beef quality and nutrition of hybrids which were Simmental breed crossed with different beef breeds,the weaning calves were finished to 18 months old under the same condition for slaughtering.The longissimus dorsi samples of each of 6 the Angus × Simmental,Limousin × Simmental,Charolais × Simmental and Gelbvien × Simmental crossbreeds were selected separately,and the general nutrition,amino acid and fatty acid of the beef samples were analyzed and tested.The results showed that: Angus Group was biggest in beef Marbling rank,Limousin Group next;Limousin Group was higher in contents of essential amino acid and amino acid related of flavor,Angus Group next;the unsaturated fatty acid,oleic acid and essential fatty acid contents were higher in Limousin Group,in especial the content of unsaturated fatty acid.The contents of some kind of amino acid and fatty acid in different beef of crossbreeds have distinct differences.