This article summarizes the current status and development trend of lactic acid bacteria on plant growth and silage protein degradation at home and abroad in recent years. The main content of the summary include the following three aspects:1) Method and purpose of lactic acid bacteria extraction and screening;2) Regulation of lactic acid bacteria on plant growth and disease;3) Influence of lactic acid bacteria on the degradation of silage protein and the microbial community. Furthermore,the problems and deficiencies in the screening and utilization of lactic acid bacteria are also summarized. At the same time, the research trend and focus of lactic acid bacteria under the new situ‐ ation are prospected to provide guidance and reference for the development of agriculture and animal husbandry.