Abstract: Plant Jiaosu is a kind of product made from fruit and vegetable cereals as the main raw material by microbial fermentation. It has been gradually favored by the public because of its non-toxic and harmless characteristics and multiple physiological functions. Understanding the metabolic mechanisms of plant Jiaosu plays an important role in improving their quality. However, there are still few summaries on the metabolic mechanism of plant Jiaosu. This paper comprehensively analyzes the research progress of plant Jiaosu, and introduces the related metabolic pathways, product change analysis, product formation influencing factors, flavor source and flavor substance changes of plant Jiaosu in the process of plant ferment glycolysis. The future development of plant Jiaosu is discussed, which provides a reference for the further research and development of plant Jiaosu.