Abstract: The aerobic composting experiment of sewage sludge with mushroom residue and pig manure as amendments for 40 d was carried out. The dynamics of temperature， water content， pH value， total organic carbon， and total nitrogen were measured during the composting process， and the compost maturity was evaluated by determining the changes of C/N value and germination indexes. It was shown that the mushroom residue and pig manure could be used as amendments for sewage sludge composting. The minimization and harmlessness of sewage sludge could be achieved in short time. The treatment with a proportion of sludge， mushroom residue and straw at 7.0∶2.5∶0.5 by dry weight showed the best performance， and the temperature ran up the fastest and could maintain above 55 ℃ for 6 d. After composting， the germination index of the processed sewage sludge reached 95%， which exhibited the best composting effect.

Key words: sewage sludge, aerobic composting, mushroom residue, compost maturity