The intestinal bacterial populations constitute the anaerobic bacteria Clostridium, Bifidobacterium, Peptococcus, Eubacterium, Fusobacterium, Peptostreptococcus, Bacteroides, E. coli, Lactobacillus, Klebsiella, Staphylococcus, Streptococcus and Bacillus species. It is known that the bacteria that make up this population are affecting human health. Therefore, any change in the population causes various diseases (obesity, diabetes, hypertension etc.). Prebiotics are needed to restore this disrupted balance and to protect it from diseases. A diet made from natural foods such as fruit and vegetables plays an important role in the regulation of intestinal microbiota. Many fruit and vegetables rich in phenolic components such as corn, rosehip, trabzon, tomato, carrot, soybean, walnut, grapefruit are important in this sense. The purpose of this compilation is; phenolic compounds, general microbiota and intestinal microbiota and explain the effect of intestinal microbiota on phenolic compounds and phenolic compounds on intestinal microbiota.