Effects of the addition of fresh poultry manure and aging on the process of barley straw silage fermentation were investigated For a period of 60 days. B aley straw and poultry manure were mixed with water (50-60% moisture content of silage) and various additives (glucose, corn, and barley) and ensiled in 0.1mm thick vinyl bag. The pattern of organic acid production varied according to the kind of additive added. after 60 days of ensiling, the NFE content of silage decreased 3-5%, the uric, arid being decomposed 90-95%, and the protein content increased 5-8%. Microbial study showed that the population of microorganism was 10^7 to 10^8 and did not vary significantly throughout the experimental period. The dominant strain was identified as heterofermentative lactic acid bacteria ire 45 days and 60 days silage. The silage contained 5%TDN when determined by iv DMD method. The value was 66.6% higher than raw barley straw, and palatability of the silage also increased significantly.