Corn gluten meal is a by-product of corn grain after starch production in the food industry or alcohol extraction in the brewing industry. It is rich in protein nutrients and has a special taste and color. It can be used as feed. Compared with fish meal and soybean cake commonly used in the feed industry, it has obvious resource advantages, high feeding value, does not contain toxic and harmful substances, does not need reprocessing, and can be directly used as a protein raw material.