Crude fiber food refers to food containing more than 2 grams of crude fiber per 100 grams of food. The main consumers of crude fiber food should be adults and the elderly. When eating it, it should be based on the recommended intake of crude fiber in nutrition, 20-35 grams per person per day. Eating more will reduce the utilization rate of other nutrients.

High-fiber food refers to food rich in dietary fiber, which is beneficial to human health if eaten regularly. Dietary fiber (DF) is a part of plants, which is not digested by human body, and has significant health benefits.