As one of the important energy-saving methods in heat and cool supplying, the parameter design for the water-source heat pump well is based on the specific hydrological, climatic, meteorological and geological conditions. Based on the analysis and introduction on the design parameters, construction technological process, well completion quality control, water pumping & injection and seepage test, quaternary large diameter water-source heat pump well was designed with heat and cool central air-conditioning technology supplied by water-source heat pump. As the heat and cool supplying water-source, various technical indexes reached the requirement.