Abstract: To improve the quality of silage,7various ratios of the mixture of ramie and hybrid Pennisetum,i.e.,100∶0(P100),70∶30(PR73),60∶40(PR64),50∶50(PR55),40∶60(PR46),30∶70(PR37)and 0∶100(R100),were tested.After fermented for 60 days at ambient temperature,the nutritional value of the silages was determined with 3replicates for each mixture.The results showed that the quality of R100 silage was the poorest among all.It was the highest in pH,acetic acid,butyric acid and ammonia nitrogen contents,and the lowest inlactic acid and hemicellulose contents.The quality of P100 silage was the best,containing the highest amounts of dry matters,water soluble-carbohydrates,neutral detergent fiber,hemicellulose,crude protein and lactic acid,and the lowest on pH,acetic acid,butyric acid and ammonia nitrogen minimum contents among the mixtures.It appeared that the greater the portion of hybrid Pennisetumin the mixture,the better the quality of the fermented silage.