When people today mention lactic acid bacteria, the first thing that comes to mind is yogurt, because yogurt is made from fresh milk and fermented by adding lactic acid bacteria. It can form a sticky texture and sweet and sour taste. . Plant lactic acid bacteria are a type of lactic acid bacteria that specifically feed on plants. In fact, we are not unfamiliar with this kind of lactic acid bacteria. For example, we have the habit of making sauerkraut in many places, whether it is sauerkraut in the Northeast or south of the Yangtze River. Sour mustard greens are fermented with lactic acid bacteria, so they have a particularly fresh and sour taste. Through the fermentation process of this plant lactic acid bacteria, it can increase freshness and prevent spoilage. At the same time, these lactic acid bacteria can also promote digestion and clear the intestines after entering the body. Therefore, although they are also bacteria, they are human beings' good friends. The above is a brief introduction to the role of plant lactobacilli. In fact, in addition to food, it is also used in animal husbandry. Especially in grassland areas, the technology of using lactic acid bacteria to ferment forage has long been popularized. This allows the grass harvested in summer to be stored until winter, and nutrients can be released through the action of lactic acid bacteria.