Nutritional characteristics of Perna viridis EAP (enzymolytic animal protein ) were studied in this paper. The experimental results indicate that the content of crude protein is 72. 8 % (dry basis ) ,its nutritional value is as high as the level suggested by FAO/ WHO in 1973 as the amino acid score and the first limiting amino acid being 93 and sulfur2containing amino acid (Met and Cys ) , respectively. In addition, it is also rich in lysine,arginine,vitamin,mineral. Asitcontainssometastysubstancessuchasglutamicacid,asparticacid,and glycine in high content , it can be processed to an ideal seafood seasoning or healthy food. The findings in anti2 tumor test indicated that the inhibition rate on Sarcoma 180 was 50. 6 % when the dosage of Perna viridis EAP used was 320 mg·kg -1 , and the weight of spleen (immunity organ) in mice was increased obviously.