Abstract: This paper introduces the current status and developments of the typical treatment technologies of dyeing and printing wastewater(DPW),including physical-chemical,chemical,and microbial processes with focuses on the mechanism,result of treatment,and merits and drawbacks of each process.According to the characteristics of the dyeing and printing wastewater,thorough treatment of the wastewater can be accomplished through the hybrid of different processes.The hybrid method based on microbial process has gradually become the main technology for the treatment of the dyeing and printing wastewater.