The invention relates to a building energy consumption monitoring and management system which comprises a plurality of lighting areas, a plurality of lighting lamps arranged in each lighting area anda pedestrian volume data collector, and further comprises a control module. The control module comprises a time control module, a control unit and a display. The control unit is electrically connectedwith the lighting lamp in the lighting area. The invention further relates to a monitoring method, a building energy consumption monitoring management system is included, a remote background is further included, the control module further comprises a wireless signal transmission module, and the wireless signal transmission module is electrically connected with the control unit. And the control module is used for processing the data signals acquired by the pedestrian volume data acquisition device and comparing the data signals with the data signals acquired by the light acquisition device soas to adjust the brightness in the building. By means of the control module, energy consumption can be saved to the maximum extent, and convenience and practicability are achieved.