Taking Cervus nippon Temminck and Cervus elaphus Linnaeus as research objects, this study analyzed and compared the contents of nucleosides, phospholipids, total polysaccharides, hydrolyzed amino acids, fatty acids, sex hormones and heavy metals including mercury, lead, cadmium, arsenic and copper systematically. The quality of crude drugs Cauda Cervi was evaluated using relative degree of association with the preliminary establishment of quality evaluation mode of both Cervus nippon Temminck and Cervus ela...