The high-efficiency evaporative condenser makes full use of the physical principle of water evaporation and heat absorption. The system formed by the evaporative condenser has low condensation temperature, which makes the compressor run with low power and power con- sumption. The EER value can reach more than 5.15 (the EER value of ordinary air-cooled heat pump air conditioner is 2.3), which can realize energy-saving operation of the compressor.The throttled low-pressure liquid refrigerant absorbs heat and evaporates, further reducing the inlet air temperature. The two-stage cooling improves the comprehensive energy efficiency of the air conditioning system (the comprehensive refrigeration cop EER can reach about 5.15), which saves 50% energy compared with the traditional air-cooled air conditioning.The return air of the indoor unit of the air conditioning system is filtered by double-layer filter screen and wet curtain，ensure the heat exchange efficiency and system life.