This fermentation tank is specifically designed for small farms, family breeding households, and planting bases. It is a durable, easy-to-operate device that converts farm organic waste—including livestock manure, crop straw, vegetable residues, and kitchen scraps—into high-quality organic fertilizer through gentle aerobic fermentation. The closed design prevents odor diffusion, while stable temperature and aeration control ensure complete decomposition. The system operates reliably with low energy consumption, helping farmers transform waste into valuable fertilizer, reduce input costs, and grow healthier crops and fruits.