The invention relates to the technical field of photovoltaic power generation and discloses to a photovoltaic power generation plate with a rainwater collection function. The photovoltaic power generation plate includes a base plate, an adjusting rod, a fixing fastener, supporting rods, a supporting column, a fixing plug bush, a fixing framework, a photovoltaic power generation plate body, a rainwater collecting box, a filtering screen, a first sewage draining pipe, a sediment device, a cleaning device, a water pumping pipe, a first water pump, a water guiding pipe, a purifying device and a vibrating motor. The top of the base plate is fixedly connected with the bottom end of the adjusting rod, the surface, close to the top end, of the adjusting rod is movably connected with the bottom ofthe fixing framework through the fixing fastener, and one side of the adjusting rod is fixedly connected with one side of the rainwater collecting box through the two supporting rods. According to thephotovoltaic power generation plate with the rainwater collection function, the photovoltaic power generation plate can collect rainwater on rainy days and dispose the rainwater for indoor use, and therefore the photovoltaic power generation plate can achieve dual purposes on the sunny days and the rainy days, so that the solar energy resource and the rainwater energy resource are fully utilized.