The invention provides a solar auxiliary heating bed-warming dehumidification mattress. The solar auxiliary heating bed-warming dehumidification mattress comprises a solar heat collection water tank,a bed-warming dehumidification mechanism, a conveying mechanism, an electric control valve mechanism, an overhauling mechanism, a limiting mechanism, a dehumidifying mechanism, a noise reducing mechanism and a heat conducting plate, wherein the bed-warming dehumidification mechanism is connected with the solar heat collection water tank; the bed-warming dehumidification mechanism comprises a temperature sensor, a mattress, a hot water pipe, a water supply pipe, a water return pipe, a water outlet pipe, an electric heater, a phase change heat storage device and a humidity sensor; the temperature sensor is installed on the side wall of the solar heat collection water tank; the hot water pipe is installed in the mattress; and one end of the hot water pipe is communicated with the solar heat collection water tank through the water supply pipe. The solar auxiliary heating bed-warming dehumidification mattress provided by the invention has the advantages of automatically heating and dehumidifying the mattress, inhibiting bacteria, improving the comfort level, being beneficial to skin health, improving the sleep comfort level, reducing the probability of suffering from skin diseases, being high in comfort level and saving energy.