Abstract:This paper analyzes the energy consumption of water source heat pump,showing that the performance coefficient of water source heat pump unit is directly related to the temperature of water resources. The socio-economic effectiveness is calculated and analyzed in summer air conditioning condition and winter heat pump condition of the district cooling and heating water supply system. The result shows the remarkable social and economic benefit in the district cooling and heating water supply system by use of water source heat pump,and it has significance of energy saving and environment protection.