Building temperature control method, device and system

The invention relates to the technical field of temperature control, in particular to a building temperature control method, device and system. The method comprises the steps that the temperature Ti of each set point is monitored, and a target point and the chilled water flow qi of a coil pipe for distributing the target point are determined according to the Ti and the preset temperature Ai of each set point every other preset period; for each target point, executing primary adjustment: adjusting the operation power of the fan at the target point; after the chilled water flow of the coil pipe at the target point is distributed every time, after a preset time s, executing secondary adjustment: adjusting the operation power of the freezing pump; and after a preset time s, according to the change condition of the operation power of the freezing pump, second-stage adjustment or third-stage adjustment is executed, and the operation power of the cooling tower or the compressor is adjusted. In this way, the problem