The article introduces the concept of "envbiotics", which is based on the balance of the host's immune system, gut environment and microbiota, expanding and refining the concepts of prebiotics and postbiotics. Prebiotics are substances that support the growth of beneficial bacteria in the gut, while postbiotics are their metabolites or inactive microorganisms. Envbiotics emphasize the interaction between host immunity and the microbial ecosystem in the gut. This approach helps to better understand how to maintain microbiota balance for health. The concept integrates prebiotics, which feed beneficial bacteria, and postbiotics, which directly support gut functions. The goal is to provide a more comprehensive framework for promoting gut health through environmental factors in the gut.