The “Microbiology and Health” High-end Forum of the Chinese Academy of Engineering and the “4th International Symposium on Probiotics, Intestinal Microorganisms and Human Health” hosted by Jiangnan University(Helplifes Technology Platform) will be held in Wuxi on December 2-4, 2021! The purpose of this conference is to deeply explore the physiological functions of probiotics, the interaction between diet and intestinal microbes, special diets and personalized nutrition, human microbiome research and industry, and to promote academic exchanges and industrial applications in the field of probiotics.