The present invention provides a solar cell module comprising a plurality of solar cell parts arranged at a distance from each other at a predetermined distance and receiving solar energy to produce electric energy, a planting part formed between the solar cell parts and planted with plants, And a heat exchange unit connected to the interior of the planting portion by a pipe, wherein the solar cell portion includes a solar module for generating energy by receiving solar energy, the planting portion including planting the plant, And the cooling water is circulated through the cooling water to be adhered to the rear surface of the solar module in the form of a pipe so that the heat of the solar module is absorbed by the cooling water, A pump unit provided at one side of the heat exchanging unit to circulate the cooling water, A storage unit connected to the heat exchange unit and storing the cooling water circulating in the heat exchange unit to cool the cooling water, a storage unit connected to the rear surface of the solar battery unit, the planting unit, and the storage unit, A plurality of sensing parts for sensing the temperature inside the heat exchanging part and sensing the humidity of the planting part, a valve part for controlling the circulation of the cooling water, a valve part provided above the planting part, And a control unit for controlling the operation of the pump unit and the valve unit using the temperature and the humidity transmitted from the sensing unit, and a control unit for controlling the operation of the pump unit and the valve unit.In the solar power generation system using rooftop greening according to the present invention, the cooling water circulating through the heat exchanger connected to the solar module is absorbed by the heat of the solar module heated by direct sunlight and the temperature, and the cooling water absorbing heat is circulated So that the temperature of the photovoltaic module can be kept constant even at a high
