Abstract:Probiotics are widely used in the food and medicine fields due to their significant health benefits，while environmental stress （such as stomach acid and bile salts） and processing conditions （such as high temperature and oxygen） can easily lead to a decrease in their survival rate. The polysaccharide-based microcapsule technology embeds probiotics in the natural polysaccharide matrix through physical or chemical methods，which can significantly enhance the gastrointestinal tolerance and stability of probiotic cells. The characteristics of commonly used polysaccharide materials in recent years and their effects on encapsulation efficiency，the functional modification mechanisms of polysaccharides for encapsulating probiotics，and the preparation methods of polysaccharide-based probiotic microcapsules were reviewed. Finally，future research directions were proposed to address the limitations of existing technologies，such as low embedding rates and poor slowrelease performance.