Silage can effectively preserve the nutrients in forages, improve the palatability of animals, and eliminate germs and pests. Silage provides green and juicy feed for livestock in the winter and dry seasons in the cold regions and the tropics. Good preparation technology can be made into high-quality, shelf-stable, and nutritious feed, which is of great significance for the development of animal husbandry. This chapter introduces the basic silage preparation methods, including forage crops and grasses, timely harvesting of forage, moisture adjustment, chopping, air removal, sealing, and other general preparation methods.