Abstract: A district in Changsha City is a demonstration base for high-tech development. It needs a lot of heat and cold energy. The geological conditions in this area are complex, and there are few ground source heat pump thermal response test data nearby. Through this performance study, it is revealed that the stratum in this research area is dominated by Quaternary overburden and Proterozoic mudstone, sandstone, slate, and there is a small amount of perched water in the upper layer 10 ～ 40 m; Through the thermal response test of the linear heat source model, the comprehensive average thermal conductivity of rock and soil mass is 1.78 ～ 1.95 W/（m·K）, and the borehole thermal resistance is 0.18 ～ 0.23 m·K/W, which is in good agreement with the borehole coring and indoor thermal physical property test.Considering the climate characteristics of Changsha, the operation load is balanced and stable in summer and winter.Without considering the thermal interference and long-term continuous operation in the heat transfer process of a large number of boreholes, the maximum heat transfer per linear meter in summer can reach 51 ～ 53 W/m, and the maximum heat transfer per linear meter in winter is 47 ～ 49 W/m.