Coarse grain noodles include corn flour, soybean flour, sweet potato flour, pumpkin flour, oat flour and mung bean flour. Coarse grains are common in flour and rice, including corn, purple rice, sorghum, oats, buckwheat, wheat bran and various dried beans, such as soybeans, mung beans, red beans and mung beans.

Noodles, as a traditional food in China, have been circulated for thousands of years. Because noodles are delicious, easy to eat, easy to absorb and can provide essential energy for the body, a large number of fans who take noodles as their main food and supplementary food have been cultivated. However, the composition and structure of flour are relatively simple, and the main component is refined wheat flour, which lacks the diversity and comprehensiveness of nutrition compared with rice and miscellaneous grains. For people who like to eat pasta and pay attention to health, this is a place to pay attention to. Dietary noodles are noodles containing dietary fiber, but not all noodles containing dietary fiber or miscellaneous grains can be called dietary noodles. According to the definition of dietary fiber food in GB28050, solid food contains 3g/ 100g dietary fiber, which can be declared as food containing dietary fiber. Solid food contains dietary fiber 6g/ 100g, which can be declared as high dietary fiber food.