Abstract:Lactobacillus paracasei is a lactic acid bacterium with a variety of probiotic properties that has attracted much attention in recent years.The probiotic properties of Lactobacillus paracasei were summarized based on Chinese and overseas progress.The probiotic mechanism of L.paracasei was revealed in terms of the immune system，lipid metabolism，antioxidant，and antibacterial effects.In addition，the role and mechanism of L.paracasei as a postbiotic was discussed based on future development trends，and future research hotspots in this field were anticipated，so as to provide theoretical support and research guidance for the widespread application of L.paracasei and contribute to the sustainable development of the probiotic industry.