Abstract: As the economic level and living rise increasingly, people are becoming more and more censorious on the food quality and safety in their daily life. The increasing industrialization of foodstuff makes people's food more and more refined. Along with a variety of foods rich in fat, sugar, and protein intake in our daily life, and the dietary fiber intake is relatively decreased. To be candid, people tend to ignore the balance of healthy diet frequently.In the human body, microbes play a crucial role in the healthy metabolism of all organisms, and microbes can interact with the host's immune system. The study of intestinal flora has greatly increased our understanding of the microbiome and the relationship between microbiome and our health and disease. Therefor, it is very necessary to study the effect of dietary fiber intake on the intestinal flora of human being. The intestinal dysfunction caused by insufficient intake of dietary fiber has also gradually drawn people's attention to the food rich in dietary fiber. In this review, the concept and classification of dietary fiber and intestinal flora as well as the influence of dietary fiber on intestinal flora are reviewed, and the application of dietary fiber in our food is considered.Abstract: As the economic level and living rise increasingly, people are becoming more and more censorious on the food quality and safety in their daily life. The increasing industrialization of foodstuff makes people's food more and more refined. Along with a variety of foods rich in fat, sugar, and protein intake in our daily life, and the dietary fiber in...Show More