The invention discloses an exploitative wind-solar generation control system and method. The control method comprises the following steps: the control system of the invention controls the output current IS of the wind-solar generation system to adjust the output current IAC of the city power supply system; in order to maintain current balance (IS+IAC=IB+IL) by the control system, under a certain load current IL and battery current IB, when the output current IS of the wind-solar generation system is increased, the output current IAC of the power supply system is decreased correspondingly; andwhen the output current IS is decreased, the output current IAC is increased correspondingly. The wind-solar generation control system of the invention can track the city power supply system instantly, thus increasing the utilization rate of the green energy; the risk that the storage battery is overcharged under light load can be avoided; when the wind-solar generation system is out of order, the system can be automatically separated from the system, not affecting the operation of the city power supply system; and the original city power system does not need to make any change and have any additional device.