This paper studies the application of ground source heat pump heating system in smart building. Through the installation of heating transmission and distribution system controller, the pressure loss in the system loop can be overcome, the zero pressure difference control point can be selected to control the throttling resistance loss of all heat users, and the heating system unit can be turned on in the smart building to realize the application of ground source heat pump heating system in the smart building. Through three times of experimental detection, the highest energy consumption of the system in 24-hour application is 15.35/kw. h, the lowest energy consumption is 12.91/kw. h, and the average energy consumption is 14.34/kw. h. In the application of intelligent building, the energy consumption is relatively stable, low energy consumption and good practicability.