Why has the H-type stacked laying hen cage become the preferred choice for medium and large commercial farms? This article delves into its structural advantages: over 30% improvement in space utilization, more uniform ventilation and lighting, and a significant reduction in labor costs through automated systems. From the perspective of animal welfare, it combines avian ethology research to explain how the H-type design promotes the health of the chicken flock and egg-laying efficiency, offering a scientific, efficient, and sustainable solution for large-scale farming.