The invention provides a method for annealing a simplified, efficient, low-cost and high-temperature superconductive long band. The method comprises the following steps of: placing the superconductive long band to be annealed into a manual band winding machine, manually winding the band on an annealing plate, placing the annealing plate into a vacuum box type annealing oven, and annealing under an oxygen atmosphere according to annealing processes. The method has characteristics of low cost, short annealing time, high production efficiency, high temperature controlling precision, and capability of uniformly annealing each part of the superconductive long band. Furthermore, compared with the traditional non-vacuum annealing oven, the purity of the oxygen atmosphere in the annealing oven isgreatly increased through a vacuumizing method, so that adverse effects of N2, NO, NO2, CO, CO2 and other non-oxygen impurity gas in the residual air in an annealing furnace on the performance of thesuperconductive long band under the high temperature in the annealing process are avoided. By the method, the rare earth oxide second generation high-temperature superconductive band subjected to annealing treatment under the oxygen atmosphere has excellent superconductive performance.