This review explores how plant-based polysaccharides from traditional herbs can benefit our health by feeding good bacteria in our gut. When these polysaccharides are fermented by our gut microbiota, they break down into smaller compounds that produce short-chain fatty acids, which have anti-inflammatory and immune-boosting effects. The research shows that different herbs have different structures that are recognized by specific beneficial bacteria, which suggests we can develop personalized functional foods tailored to promote specific health benefits.