Broadband low voltage electricity utilization information collection system provides the good guarantee for expanding electric power enterprise marketing service method by high speed and real-time communication. This paper concludes key problems and implements by terminal networking mode， districts repeater and power quality detection. And it analyzes terminal construction requirements including multi-function electric meter， communication protocol of data collection terminal communication with host. Then districts construction plan is suggested. Finally， it describes some prospects of the broadband low voltage electricity utilization information collection system application.