Based on an engineering section in Zhejiang, field tests on exceptional energy piles with semi-buried pipes were carried out. By monitoring the temperature of the pile and the soil around the pile, the thermodynamic characteristics of the energy pile under hydrothermal circulation were studied. It was found that the temperature rise along the pile increased first and then decreased under temperature load, which indicated that the heat transfer effect of pile was more obvious at the greater depth. Values of soil temperature at different positions from different pile depths to the pile center were simulated by Matlab, and in the vicinity of the pile side, the soil temperature rose significantly. Therefore, the influence of thermal temperature cycle on the physical parameters of soil, such as heat transfer characteristics and mechanical properties, should be considered in practical application. The results show that the soil temperature within 1 m (2.5D, D is the diameter of the energy pile) from the pile center is affected by hydrothermal circulation for 48 hours. When the simulation time is extended to one year, the influence range of soil temperature field can reach 2.8 m (7D).