1. Flour is directly ground into flour after peeling wheat or other grains, while raw flour is a polysaccharide substance obtained by separating protein and other substances from flour, which is mainly used in food, adhesives, starch fabrics, western medicine tablets, glucose production, maltose and so on.

2. Flour and edible wheat can be directly ground. It can be divided into head, two sides, three sides and wheat skin. The whitest head is the innermost wheat. Raw flour is extracted from sweet potato or potato.

Flour can be used to make steamed bread, noodles and steamed buns, and raw flour can be used to make cold noodles.