The selection and breeding of antibacterial forage crops with different varieties of forage crops have different susceptibility to fungi. Therefore, the selection and breeding of antibacterial forage crop varieties can reduce the infestation of molds, which is a direct way for feed anti-mildew. Scientific planting and harvesting techniques have shown that 80% to 90% of Aspergillus flavus isolated from peanuts produces toxins, which is higher than that of Aspergillus flavus isolated from other crops. Therefore, peanuts are highly contaminated by Aspergillus flavus and the aflatoxin content is also high in plots where peanuts are continuously grown. Broken peanuts can easily contaminate Aspergillus flavus, which is also conducive to the production of toxins. If the rotation cultivation techniques and scientific harvesting methods are adopted, the mycotoxin contamination can be reduced. In addition, during harvesting, storage and transport, insect bites, squeaks, and grinding should be avoided as much as possible to avoid damage to the skin and shell of cereals such as corn and peanuts. The broken kernels should be removed. The main factors that strictly control the moisture content of stored feeds to cause moldy feed are humidity, temperature, and oxygen concentration. If you can control the humidity, you can effectively prevent moldy feed. Under normal circumstances, controlling the moisture below the safety line is the easiest method of storage. After the forage crops are harvested, they should be quickly dried and must be kept dry. The amount of water control was less than 13% for rice, 12.5% ​​for maize, and 8% for peanuts. Improving storage conditions and inhibiting mold growth Most of food molds occur during storage. Therefore, the use of anti-mildew technology during storage is an important measure to prevent mildew in feeds. 1 physical anti-mold law. Mainly control the temperature of the storage environment, sealed oxygen storage, controlled atmosphere storage, low temperature ventilation storage and radiation method. 2 chemical anti-mildew law. It is the addition of fungicide in the feed. At present, feed production companies use the most amount of propionic acid and its salts, followed by sorbic acid and its salts.