The invention discloses a central air conditioner cooling tower fan one-driving-two control system for monitoring real-time energy consumption. The one-driving-two control system is characterized by comprising a frequency converter and two cooling fans. The cooling fans comprise a main fan #1 and a standby fan #2. The control system further comprises an energy consumption statistic module which comprises a three-phase electricity meter connected to an incoming line terminal of a main circuit. The control system can realize multi-point control and switching of manual starting and automatic starting. The energy consumption condition of the control system can be monitored in a real-time manner, so that energy saving is facilitated.