Abstract: Using shallow confined aquifers as the main energy storage carrier for water source heat pump systems,the FeFlow finite element software was used to simulate and calculate the temperature field of the energy storage well and underground aquifer of the water source heat pump system during continuous operation for 3 years. According to simulation results, the shallow water source heat pump system can store cold energy in the aquifer during the heating period. The maximum temperature at the center of the cold well can be reduced by about 12℃, while storing heat in the aquifer during the cooling period. The maximum temperature at the center of the hot well can be increased by about 7℃, effectively reducing energy consumption during the heating and cooling periods, and achieving the effect of offseason energy storage.Based on regional geological conditions and aquifer characteristics, analysis shows that, the larger the hydraulic conductivity and the smaller the porosity of the aquifer, the greater the range of its energy storage influence. The more unfavorable is the control of energy storage range and the protection of underground ecological environment.