The invention relates to a solar hot air heating refrigeration hot water multipurpose device comprising a heat collecting module and a vacuum heat collecting pipe, wherein the outer layer of the heat collecting module is an insulating layer, a liner is arranged in the insulating layer, an inner core is arranged in the liner, the inner core is connected with a heat absorber through inner core holes symmetrically arranged at both sides of the inner core, the liner is hermetically connected with the vacuum heat collecting pipe through liner holes at both sides of the liner, the lower end of the inner core is closed, and the upper end of the inner core is connected with an induced air joint; the upper end of the liner is semi-closed, and the lower end of the liner is connected with a supply air joint; the induced air joint is connected with a draft fan, the draft fan is connected with a cold air outlet arranged in a room through an induced air pipeline, the supply air joint is connected with a blower, and the blower is connected with a hot air inlet arranged in the room through a supply air pipeline. The draft fan and the blower are used for circulating the air in the room, a heater arranged at a roof and the vacuum heat collecting pipe are used for heating the air, and the heated air heats up the room, thereby the device can perform a function of a radiator; meanwhile, the water in a hot water tank is also heated by a U-shaped circulating pipe, thereby the device can perform a function of a water heater.