The invention discloses an energy-saving high temperature boiler which comprises a boiler high temperature protection cover. A superconductive heating liner is arranged in the boiler, and the bottom end of the liner makes contact with high temperature oil. An electric heating core is arranged at the bottom in the boiler. A heat exhaust fan is arranged on the top of the boiler. A boiler core is a through body. After the hollow portion of the boiler is sealed with an upper isolation plate and a lower isolation plate, heating can be achieved through another heat source such as natural gas or fire coal; heat is transmitted to the superconductive heating liner through the temperature of the high temperature oil in the boiler; and heat is dissipated out of the boiler through the fan or a sealed high-pressure transmission metal pipe. The energy-saving high temperature boiler is simple in structure, reasonable in design, low in energy consumption, high in heating efficiency and free of toxicity or corrosion or radioactivity, and thus the efficiency is greatly improved during large-area heating.