Floating type trinitarian photovoltaic greenhouse

The invention provides a floating type trinitarian photovoltaic greenhouse. The greenhouse comprises a photovoltaic power generation system, a water surface planting system and an underwater breeding system. A solar photovoltaic assembly of the photovoltaic power generation system is installed on a floating base through a support, the photovoltaic power generation system further comprises a header box and an inverter, the water surface planting system floats on a lower water area covered by the photovoltaic assembly through a floating bed, the structure of the water surface planting system is the floating bed composed of an upper layer and a lower layer in the longitudinal direction, a middle interlayer is a floating bed matrix, and the floating bed is provided with a floating body, ventilation holes and planting holes. A net cage breeding mode is adopted in the underwater breeding system, and a net cage is arranged below the water surface planting system. The greenhouse perfectly combines photovoltaic power