Food processing refers to food crushing, feed processing, vegetable oil and sugar processing, slaughter and meat processing, aquatic products processing and food processing activities such as vegetables, fruits and nuts based directly on agricultural, forestry, animal husbandry and fishery products. It is a kind of broad agricultural product processing industry.

Food processing is the process of putting edible things through certain procedures to produce better or more beneficial changes. Raw grain or other raw materials are artificially processed to form a new form of directly edible products, which is called food processing.

For example, wheat is milled, screened, stirred, shaped and dried to become biscuits, which belongs to the process of food processing, and food processing is a professional technology.