Fermented cottonseed meal is processed through advanced biological fermentation engineering technology, aiming to eliminate toxic substances such as free gossypol in cottonseed meal and improve its nutritional value. This treatment not only eliminates anti nutritional factors such as free gossypol in cottonseed meal, but also increases the nutritional level beyond the same level of cottonseed meal. The fermented product is rich in nutrients such as amino acids, small peptides, organic trace elements, B vitamins, etc. It also contains abundant lactic acid, digestive enzymes, probiotics, etc. These ingredients not only do not reduce production indicators, but also promote animal growth.