Corn is one of the three major agricultural crops in the world. It is a food, renewable energy and resource, an industrial raw material, and also an industrial economy. It is one of the energy and nutrition sources for human and animal survival. The cultivation, production, and processing of corn are major issues related to national strategy, national security, national economy, and people's livelihood. The position of corn in the national food security strategy is very prominent and important. Corn can be processed to produce a wide range of products, which are widely used in industries such as food, medicine, organic acids, amino acids, papermaking, textiles, chemicals, machinery, plastics, fuels, electronics, etc. The corn processing industry is one of the important industries in the world, with thousands of industrial chains and products covering various industries. The United States is a major corn processing country in the world, while China ranks second in the world in corn processing. China's corn starch production technology has developed rapidly, with equipment performance and processing capacity steadily improving. Many domestic equipment have replaced imported equipment; The quality and yield of various products produced are improving year by year, while the consumption of various raw materials and energy is decreasing year by year. The use of wastewater treatment and biogas is expanding year by year, and water recycling is being implemented year by year.