Abstract: A field trial was carried out to study the influence of sludge application on yield and quality of peanut, soil fertility and heavy metal content in soil and peanut. The result showed that applying sludge 7500~3000kg/hm2 could increase the yield of peanut by 6.3%~15.8% based on no sludge application, and the yield of peanut increased as the sludge application rates increased. Applying sludge had positive effect on improving the quality of peanut, keeping and improving soil fertility. According to analysis of the heavy metal content in soil and peanut, there was no obvious difference between sludge application treatment and no sludge treatment. That indicated that the crop and soil were not polluted by heavy metal in sludge application.