The invention relates to the field of regeneration of a fuel cell, in particular to a method for restoring regeneration of a caustic failure film electrode of a proton exchange membrane fuel cell. Thefailure film electrode is alternatively washed by introducing an acid and water, residual acid and water are removed by introducing inertia gas, so that the failure film electrode is obtained restored and regenerated. The method is simple, is easy to operate and is rapid in efficiency, and the electrode performance can be completely restored within a short time; and with the adoption of the method, the performance of the fuel cell can be restored, and the problem of performance abrupt reduction after alkali introduction of the fuel cell is effectively solved.