The invention discloses a combined type phase-change heat-storage heating device comprising a heating device shell, a heating device base, a room temperature detector and a heat-storage material temperature detector. A cooling hole, an external water outlet bin door, an external water return port bin door, a maintenance and inspection hole, an external solar water inlet pipe bin door and an external solar water return pipe bin door are formed in the outer wall of the heating device shell. A water storage container is arranged on the top of the heating device shell. A water storage opening seal cover is arranged on the water storage container. A vent hole is formed in the water storage opening seal cover. The water storage container communicates with a hot medium water circulation pipe. A water flow control pump is installed on a communicating water pipe. A material supplementation opening is formed in the top of the heating device shell. The heating device shell is internally provided with a closed phase-change heat-storage cavity and a cooling device. The closed phase-change heat-storage cavity is internally provided with a phase-change heat-storage material, heating devices, a hot medium oil inner container and hot medium water inner containers. The hot medium water inner containers include the first hot medium water container and the second hot medium water inner container, wherein the first hot medium water container and the second hot medium water inner container communicate with each other.