The invention relates to a solar storage and conversion box, which comprises a box body, a solar panel, a high-temperature heat accumulation body, a heat transfer body, a temperature difference conversion device, a low-temperature heat accumulation body and a constant-temperature hot water tank. The solar storage and conversion box is characterized in that the constant-temperature hot water tank and the high-temperature heat accumulation body are arranged in the box body; the interlayer of the box body is provided with a high-efficiency heat insulation body; the solar panel is used for storing electrical energy into the high-temperature heat accumulation body by a transmission cable; the upper part of the high-temperature heat accumulation body is provided with the heat transfer body and a heat furnace heat collection basin; the lower part of the high-temperature heat accumulation body is provided with the temperature difference conversion device and a temperature difference conversion transfer bar; the temperature difference conversion device is connected with the low-temperature heat accumulation body; the low-temperature heat accumulation body is connected with the constant-temperature hot water tank; and the constant-temperature hot water tank is provided with a hot water outlet pipe and a heat supply delivery pipe. The solar storage and conversion box not only is a system which is capable of adapting to wide voltage changes, storing energy infinitely and performing conversion efficiently, can be adjusted flexibly, is high in service life and is protected at high reliability but also is a system which is very few in energy conversion links, very good in thermal insulation property and very high in photovoltaic utilization rate of electrical energy.