Abstract:Microbial ferment food has a good application prospect in the field of functional food development because of its rich nutrients，active ingredients and various functional properties，and have attracted extensive attention from many domestic and foreign scientific research scholars.This article reviewed the research progress of microbial ferment products at home and abroad.The research on the fermentation process of microbial ferment was summarized.The study on main microorganisms and the changes of related metabolites during the fermentation of microbial ferment was expounded.The biological activity of microbial ferment was summarized.At the same time，it had made some prospects for the future research direction of microbial ferment products，and expected to provide reference for the development and research of functional microbial ferment food in the future.