目的 探讨复合微生态制剂对母猪免疫力、生产性能、肠道健康、饲料利用率等方面的影响。 方法 通过查阅相关文献，总结近年来关于复合微生态制剂在母猪饲料中应用的试验研究，包括不同制剂种类、添加剂量、使用阶段等方面。 结果 复合微生态制剂在增强母猪免疫力、提升母猪生产性能、改善母猪肠道微生态平衡、提高饲料利用率等方面显示出积极效果，能够有效减少母猪疾病发生率、提高其繁殖性能，对仔猪的生长发育也具有一定的促进作用。 结论 复合微生态制剂在母猪饲料中具有广阔的应用前景，但不同制剂和使用条件下效果存在差异，还需进一步深入研究以优化其应用方案，实现更好的养殖效益。

Objectives The effects of compound microecological agents on the immunity, production performance, intestinal health, utilization efficiency of feed and other aspects of sows were studied. Methods The studies on the application of compound microecological agents in the feed for sows including types of agents, dosages of addition, and stages of use in recent years were summarized by reviewing the relevant literature. Results Compound microbial agents had positive effects in enhancing the immunity of sows, improving the productivity of sows, improving the balance of gut microbiota in sows, and increasing the utilization efficiency of feed. They effectively reduced the incidence of diseases in sows, improved the reproductive performance of sows, and promoted the growth and development of piglets. Conclusions Compound microbial agents have broad application prospects in the feed for sows, but there are differences in the effects under different agents and condition of usage. In-depth studies are further needed to optimize the schemes of application and obtain better benefits of farming.