Abstract: The quality and quantity of dyeing and printing wastewater have changed significantly because of the development of dyeing and printing industry. The current situation of dyeing and printing wastewater in China is analyzed. The improvement of biotechnology，such as aerobic biotechnology，anaerobic biotechnology and anaerobic-aerobic biotechnology for dyeing and printing wastewater treatment is presented. The progress of new biotechnology，such as bio-augmented and immobilized microorganism is reviewed.