A solar heating device is characterized in that: an auxiliary heating device is arranged between a heat storage bucket and a radiator, and the auxiliary heating device comprises a heating bucket, a heat conductive medium, an electric heater and a heat transfer water pipe; the heating bucket is provided with the heat conductive medium and the electric heater, the heat transfer water pipe penetratesthrough the heating bucket and the heat conductive medium, one end of the heat transfer water pipe is connected with a water outlet of the heat storage bucket, and the other end thereof is connectedwith a water inlet of the radiator; and the auxiliary heating device further comprises a solar cell panel, a controller, a storage battery and an inverter, the solar cell panel, the controller and theinverter are sequentially connected, the other end of the inverter is connected with the electric heater, and the storage battery is in parallel connection with the inverter on the controller. The solar heating device can solve the problem of the existing heating device such as too low water temperature in winter night, and has the advantages of energy conservation, environmental protection, simple structure, low fabrication cost, convenient use, fast and efficient auxiliary heating and the like; and the solar heating device is applicable to independent heating in winter for families, villas,shops and rural schools and offices.