A complete high temperature pump including motor, reducer, coupling and pump head several parts, the pump head part of the pump housing, front and rear side cover, gear shaft, sliding bearings and shaft seal composition. High-temperature pump is a positive displacement pump, work rely on the main and driven gears caused by the intermeshing changes in the volume of work to transport the melt. High temperature pump is widely used, mainly used in construction and drainage, petrochemical power, paint electroplating, medicine and foodstuffs, metallurgical mining, textile printing and dyeing, municipal environmental protection, farmland water conservancy, ceramic papermaking, aerospace shipbuilding, nuclear industry and national defense and national economy In all areas.