The three-dimensional hydroponic planting tank adopts a three-dimensional layered structure (with adjustable layer height of 30-50cm), achieving a 4-6 times increase in yield of leafy crops through a circulating nutrient solution system (flow rate of 0.8-1.2L/min). Equipped with intelligent light compensation and temperature control (with ±1℃ precision adjustment), it achieves a water saving rate of 95%. It is suitable for high value-added crops such as strawberries and lettuce, and increases space utilization by 300%.