The lever type soil evapotranspiration meter is used to measure transpiration, evaporation, and groundwater in farmland-A more systematic and comprehensive standard experimental equipment developed and produced for soil water conversion. It studies the water consumption patterns of crops and the water transport and transformation patterns in SPAC systems by recording and analyzing the water cycle of the tested soil (undisturbed soil or artificially prepared experimental soil). The instrument adopts an advanced high-resolution weighing system, equipped with an intelligent data collector and signal sensor, which can simultaneously detect the small changes in water transpiration, evaporation, leakage and temperature of the measured soil over time. Corresponding parameters such as air humidity, lighting, precipitation, etc. are analyzed, processed, recorded, and stored in real-time online, achieving high-speed, accurate, and user-friendly data collection, greatly improving work efficiency and reducing labor intensity. Suitable for long-term monitoring of hydrological cycles in ecosystems such as farmland, grasslands, forests, and river wetlands.