The concrete with sewer sludge fully replacing of natural sand was prepared for the purpose of harmless management,resources utilization and industrialization of city sludge.Experiment results show that the compressive strength of concrete adding proper quantity of sewer sludge reaches 40 MPa,which is higher than the standard concrete.And with increasing of sludge,the slump of the concrete decreases.Heavy metal infusion toxicity of the concrete added with sludge can meet the national standard requirement so that no secondary pollution would be caused.