The invention belongs to the technical field of solar energy utilization and discloses a multi-energy supply system based on air circulation. The multi-energy supply system based on air circulation is characterized by comprising an air source-water source heat pump system, a water heat collector system, a gas boiler system, an air heat collector system and a central air conditioning system, wherein the air source-water source heat pump system comprises a compressor, a condenser, a throttle valve, an air-cooled evaporator and a water-cooled evaporator; the water heat collector system comprises a solar water heat collector, a hot water storage tank and water pumps; the air heat collector system comprises a solar air heat collector and a draught fan; the gas boiler system comprises a gas boiler and water pumps; all parts of all the systems are connected through pipelines and are switched to be combined through opening and closing valves. When the environmental condition is changed, a suitable working mode can be switched by opening and closing the valves to ensure an energy supply requirement of a building.