To explore the advantage of sludge composted by bioaugmentation technology,0.2% and 0.4% of compound biological inoculation was applied respectively,and the temperature,organic matter content,ammonium nitrogen,nitrate nitrogen,heavy metal content,ascaris eggs mortality and the seed germination index (GI) were analyzed.The results showed that the compound biological inoculation had influence on compost index,it improved the rate of high temperature,prolonged the time of composting,accelerated the degradation of organic matter,promoted the transformation of ammonium nitrogen and nitrate nitrogen,decreased the heavy metal content,increased ascaris eggs mortality,and enhanced seed germination index.When the quantity of compound biological inoculation was 0.4%,the effect was most obvious and was most beneficial to sludge composting.