Anti-corrosion heat preservation pipe

The utility model discloses an anti-corrosion heat preservation pipe which comprises a first pipe body, a heat preservation layer, a second pipe body and a heat preservation box, the first pipe body is detachably arranged on the inner side of the second pipe body through a connecting piece, and the repaired mouth positions of the two sides of the first pipe body and the second pipe body are wrapped with heat shrinkage belts in a sealed mode; the heat preservation layer is arranged between the first pipe body and the second pipe body. The heat preservation box is arranged at the connecting position of the two first pipe bodies and comprises two first surrounding plates and a heat preservation material, the two first surrounding plates are symmetrically arranged in a lap joint mode, and the lap joint position of the two first surrounding plates is arranged in an S-shaped staggered mode and filled with a sealant; the two first surrounding plates are filled with the heat preservation materials. Therefore, the pro