Amid the intensification of global pig production，the issues of antibiotic resistance and public health risks arising from antibiotic overuse have become increasingly prominent. Consequently，many countries have implemented policies to restrict antibiotic use while promoting the adoption of probiotics as a sustainable alternatives in animal husbandry. Probiotics serve multiple functions，including regulating gut microbiota，enhancing immunity， improving nutrient absorption，exerting antioxidant effects，and enhancing meat quality. Their application can significantly contribute to swine health and productivity. This paper reviews the historical development and current application of probiotics，analyzes recent research advances and industry supply?demand dynamics，and forecasts future trends. It aims to provide a comprehensive and updated perspective on the role of probiotics in sustainable and healthy pig production.