Abstract: Discuss the low-temperature degradation of corn straws compound strains growth characteristics and degradation in liquid fermentation conditions called GF-S72.The results showed： under 10℃ condition,GF-72 could improve the effects on the degradation of corn straws.The growth curve of compound strains directly into the logarithmic phase after inoculation, the11 d largest growth, the OD value of 0.246;p H value decreased rapidly in the early stage of incubation, and then stabilized at around 7.2;degradation rate of 34.70% after 15 d,significantly higher than CK;cellulose,hemicellulose,lignin remaining amount was 1.12 g,0.72 g,0.27 g,was significantly higher than CK.Therefor therefore GF-S72 complex strains has a research and development potential is very complex strains.So compound strain named GF-S72 was a strain with had the potential of research and development.The result showed that the test parameters and basis were provided to further develop straw counters-field compound bacterium agent for the bacteria.