Rare-earth functional porcelain electric heating component

The invention discloses a rear-earth functional porcelain electric heating component. The rear-earth functional porcelain electric heating component comprises an insulation end, a cold-end insulation porcelain tube, a rear-earth functional porcelain tube, an insulation plug, a central rod fastening nut, a central rod, a heating resistance wire and wiring rods, wherein the wiring rod penetrates through the insulation end to enter the cold-end insulation porcelain tube, a plurality of through holes are formed in the rear-earth functional porcelain tube, one end of the heating resistance wire is connected with one of the wiring rod, and the other end of the heating resistance wire sequentially passes through the plurality of through holes and then is connected with the other wiring rod. In the rear-earth functional porcelain electric heating component provided by the invention, a functional porcelain technology is employed, and the rear-earth functional porcelain electric heating component is suitably used for h