Abstract: The effects of 4 kinds of microorganism agents on the composting of chicken manure were studied. The results showed that microorganism agents could significantly increase fermentation temperature during early period of composting， extend high-temperature time， and accelerate dehydration of compost materials and the maturity of composting. Compared with the control， the temperature in the compost inoculated with microorganism agents was 12℃-20℃ higher at the beginning of fermentation， and the time of compost maturity was shortened by about 12-13 days. Moreover， addition of microorganisms could also accelerate the degradation of organic matter and decline C/N ratio. The pH value in the compost inoculated with microorganism agent of No. 2 was the lowest among all microorganism agents studied, indicating it could control the loss of nitrogen to some extent. Overall， microorganism agents of No. 2 and No. 3 were better than other two agents in the application of chicken manure compost.

Key words: chicken manure, compost, microorganism agents