Professor Li Lan Juan, an academician of the Chinese Academy of Engineering and a well-known infectious disease scientist, has been engaged in clinical scientific research and teaching of infectious diseases for more than 40 years. She has made significant breakthroughs in the study of hepatic failure, viral hepatitis, and infection microecology in liver disease. Professor Li has created a unique and effective Li’s artificial liver system, and is a pioneer of the national artificial liver industry. She has pioneered and continuously enriched the theory of infection microecology, and took the lead in fully revealing the changes in the intestinal microecology metagenome of liver diseases. She has made original achievements in the prevention and control of human infection of H7N9 avian influenza, and created a Chinese model for the treatment of infectious diseases, which has been integrated into the ‘Belt and Road’ strategy to demonstrate China’s strength. The WHO positively evaluates that it sets an international model.