Abstract: The contents and change trend on amino acids and trace element in sarcocarp from A,B two different strains of wild Rose rugose Thunb fruits were analyzed and compared at different ripening phase by L-8500 type amino acid analyzer and agilent-7500 type inductively coupled plasma- mass spectrometry( ICP- MS).The results showed the types of amino acid,contents of total amino acid,essential amino acid,medicinal amino acids of A strain was higher than these of B,and quality of B strains was better than A,A and B were belonged to a high quality protein.As fruits ripening amino acid contents of A,B two strains reached the highest around mid- august and were overall into a changing process of dynamic unstability,of which A was upward,and B showed rising firstly then downward trend.Compared trace elements types and contents of A,B two strains,A was better than B.The contents of trace elements of A,B were on the decline trend in generally while fruits mature.