Abstract: 13 forage plants, Secale carele L.wintergrazer-70(No.01), Lolium multiflorum L.(No.02), Silphi-um perfoliafum L.(No.03).Pennisetum amaricanum/Pennisetum purpureum F1(No.04).Oryze satira L.(No.05).Paspalum wetsteinii L.(No.6), Casuarrina eguisetifolia L.(No.7).Pinus massoniana Lambert.(No.8).Medicago saliva L.(No.9)Vicia saliva L.(No.10).Cajanus cajan L.Millsp(No.11).Leucaena leucocephala(Lam)De wit cv.Cunningham(No.12).Pheaselus atropur pureus Vav.siratro(No.13), which-grow well in Fujian hillside or winter-idle-field were employed to study protein and amino acid content.The results are as following; 1.In the dry plant sample, the content of protein.17 amino acids and 9 essential amino acids(EAA)of No.09.No.01.No.02 and No.12 are more than 26.6%.21.46%.10.56% separately.No.9 contains the highest content of 9 EAA and Lysine and 46.3%, 35.5% of the ck3(Peru fish meal)respectively.No.12 contein the highest content of Methionine and 125.9% of the ck3.2.In the each kind of protein, No.07.No.09 and No.12 contain the highest content of 9 EAA.Lysine and Methionine, they are 50.16%.5.99%.12.00% separately.3.Compared with the proportion of EAA in ideal pro-tein.The protein of No.7 close to ideal protein and the protein of No.01 and No.02 contain the lower pro-portion of lysine and Methionine.No.03 and No.06 contain the lower proportion of lysine.Evaluation to the 13 plants had been made at the last of this paper.