Abstract: The present disclosure provides a solar photovoltaic generation monitoring system and a method for monitoring solar photovoltaic generation. The system collects electrical and environmental parameters of a plurality of solar photovoltaic generation devices by using a plurality of sensor devices. The electrical and environmental parameters are transmitted into a server through a plurality of wireless communication device and a gateway. Therefore, the present disclosure can overcome the problems of high costs and the difficulties of hard wire deployment, and thus has advantages such as easy repair and low costs.