The utility model discloses an utilize light reflection's solar PV modules power generation system relates to solar energy power generation technical field. The utility model discloses a plurality of photovoltaic module that are array arrangement all are equipped with first reflector panel on every photovoltaic module of group, first reflector panel and photovoltaic module's rotate bracket connection, and still including the actuating mechanism who is used for responding to photoelectric sensor that the Sun's rays shines the angle with be used for making first reflector panel along with sun illumination angular adjustment, photoelectric sensor passes through the circuit and links to each other with the controller, and the controller links to each other with actuating mechanism. The utility model discloses utilize light in the reflection of each other of inter -module, make the photovoltaic module surface receive more exposures in the unit interval, improve photovoltaic power generation system's list generated energy made of baked clay to improvement photovoltaic power generation system's electricity generation income, reduction degree electricity cost.