Grains powder is a kind of powder product made of all kinds of grains, miscellaneous grains, beans and raw materials with the same origin of medicine and food. It is the floorboard of five-grain flour products. Five-grain refers to food crops in general, not "rice, millet, wheat and glutinous rice" in a narrow sense. Coarse cereals in a broad sense include: rice, millet, brown rice, corn, canned rice, glutinous rice, coix seed, black rice, Redmi, soybeans, red beans, mung beans, black beans, buckwheat, oats, wheat, sorghum and sweet potatoes. The puffed powder made from such raw materials is collectively called whole grain powder.

Grain flour belongs to grain processed products.