The utility model relates to a high-temperature furnace body, in particular to a reel-to-reel atmosphere heat treatment furnace body for high-temperature superconductive strips, which mainly solves the technical problem of non-uniformity of reactant constituents on the surfaces of the strips, existing by adopting a unidirectional ventilation mode in case of a long furnace tube of the heat treatment furnace body. The technical scheme is as follows: the reel-to-reel atmosphere heat treatment furnace body for high-temperature superconductive strips comprises a furnace tube, and is characterized in that one or more intake ports are formed in the length direction of the furnace body, and the upper ends of the plurality of intake ports are connected with intake tubes parallel to the furnace tube; in order to enable an atmosphere in the furnace tube to be more uniform, a bypass conduction tube distributed with holes in the surface can be additionally arranged in the furnace tube. According to the reel-to-reel atmosphere heat treatment furnace body for high-temperature superconductive strips disclosed by the utility model, a certain atmosphere is charged in a tubular atmosphere furnace in a sectional mode, in particular, the atmosphere can be uniformized and the surface exchange of a sample can be accelerated in case of a long furnace tube, and workpieces indicate that the influence of the emitted gas on other portions is greatly reduced.