To protect a heating coil and efficiently discharge a gas generated around the heating coil.

This heating coil protection cover includes a distal end part composed of a first upper part having the approximate semi-conical shape, and a first lower part having the approximate cylindrical shape, and a duct part extending from the first upper part. The duct part has a second upper part having the approximate triangular roof shape having an angular part at its upper part and projecting into the triangular shape, and a second lower part hanging down roughly in the vertical direction from a lower end part of the second upper part, and has a two-layered structure in which an upper layer as a space formed by the second upper part and having the approximate triangular cross section, and a lower layer as a space formed by the second lower part and having the approximate triangular cross section are partitioned by a partitioning part in a state that they are not communicated with each other, the upper layer is formed in a state of being communicated with the space formed by the first upper part, the lower layer is partitioned from the space formed by the first upper part by a spacer, and a wire rod forming the heating coil, is inserted to the lower layer.