The invention relates to a heat exchange tube stack of a high temperature cooler. The heat exchange tube stack comprises a plurality of heat exchange tube bundles, wherein each heat exchange tube bundle comprises a water inlet annular tube, a water outlet annular tube, an upper tube plate, a lower tube plate, side tube plates, casing tubes and cooling tubes; the water inlet annular tube and the water outlet annular tube are welded into an annular shape through the upper tube plate and the lower tube plate; the plurality of side tube plates are respective in sleeve connection with the exteriorsof the water inlet annular tube and the water outlet annular tube; the casing tubes are respectively and fixedly connected to connecting parts of the water inlet annular tube, the water outlet annular tube and the side tube plates; the plurality of cooling tubes are fixedly connected to the inner sides of the water inlet annular tube and the water outlet annular tube; and cooling liquid flows inthe water inlet annular tube, the water outlet annular tube, the upper tube plate, the lower tube plate, the side tube plates and the cooling tubes. The heat exchange tube stack of the high temperature cooler has the advantages of realizing the high-efficiency heat exchange of the high-temperature cooler, preventing the overheating failure and temperature difference stress destruction of the heatexchange tube bundles in the high-temperature heat exchange condition, ensuring the flow distribution requirement of cooling water of each heat exchange tube stack, and being suitable for the stable operation of an electric arc wind tunnel high-temperature cooler in various modes.