Abstract: This study aimed to screen microbial communities that can efficiently decompose lignocellulose, as well as determine their ability to deodorize odor of livestock waste. Composted cattle and chicken feces samples were used to cultivate lignocellulose degrading microbial communities based on a restrictive culture technique. These microbes were mixed with unprocessed straws (wheat, rice and corn). Subsequently, weight loss was used to evaluate the capability of the microbes to decompose lignocellulose and resist microbial contamination. Naturally dried livestock wastes were also used to investigate the ability of these microbes to utilize and deodorize livestock and poultry wastes. Six days after inoculating with lignocellulose microbial communities, weight loss of wheat, rice and corn straw reached 47.00%, 48.62% and 50.21%, respectively. In contrast, the weight loss of these straws was 42.14%, 44.99%, and 53.74% for wheat, rice and corn respectively in the absence of inoculation.Lignocellulose microbial communities cultivated in excrement nutrient solutions (100 mL) (containing 5 g of swine manure, or 3 g of chicken manure, or 0.35% filter paper) were able to reduce odor intensity after 8 days. In conclusion, lignocellulose microbial communities screened in this study efficiently decomposed cellulose in different straws without chemical pretreatment and were able to resist other bacteria. They were also able to deodorize odor from livestock and poultry wastes.