The invention relates to a renewable energy integrated complementation and utilization system based on cross-seasonal heat storage. The system comprises a flat plate type solar heat collector which is used for collecting annular solar energy and providing heat energy, a perpendicular U-shaped cluster buried tube which is connected with the flat plate type solar heat collector for storing rich solar energy of the spring and the summer for heat supply use in winter, a water circulating sub system which is separately connected with the flat plate type solar heat collector and the perpendicular U-shaped cluster buried tube for performing water heating and water circulating, a user requirement terminal which is connected with the water circulating sub system, and comprises a bathing connecting device and an indoor heat exchange device, and a control sub system which is an integrated control cabinet for switching different working modes of the system by controlling a valve on a pipeline in the control system to open and close. Compared with the prior art, the renewable energy integrated complementation and utilization system has the advantages of complementary energy sources, heat cross-seasonal transfer and utilization, low investment, easy popularization, volume production and the like.