Abstract:Chlorobenzenes are main pollutants in wastewater. The new development of the microbial treatment techniques for chlorobenzenes-removal in the wastewater is discussed in this paper. It was included that microoganisms degrading chlorobenzenes, aerobic and anaerobic biodegradation, biological co-meta- bolism, and biological treatment processes. The developmental trend of biological degradation chlorobenzenes is also predicted.