Abstract:Wet milling is a common processing technology for agricultural products，allowing the separation of different components. The factors affecting the extraction of corn starch by wet milling were introduced from the corn quality and storage conditions，and then the drawbacks and limitations of conventional wet milling methods were summarized. Furthermore，new efficient and green methods for the extraction of corn starch，such as enzyme，ultrasound，and extrusion methods developed in recent years，were introduced，with a view to providing theoretical references for reducing energy consumption and carbon dioxide emissions.