The invention discloses a reinforcing structure and method for an inner ring wall of a dry quenching coke furnace, and belongs to the field of coke furnace equipment. The reinforcing structure comprises an annular structure body consisting of an inner ring wall and an outer ring wall, the lower end of the whole annular structure body is supported by brackets; a plurality of reinforcing columns arranged in the vertical direction are arranged on the outer side surface of the inner ring wall, the reinforcing columns are uniformly distributed around the axis of the inner ring wall, and a pluralityof supporting beams are uniformly arranged between the reinforcing columns and the outer ring wall. The reinforcing structure has the beneficial effects that the reinforcing columns are arranged on the inner ring wall of the dry quenching coke furnace, and the supporting beams are arranged between the reinforcing columns and the outer ring wall to support the inner ring wall, so that the outer ring wall can radially prevent the inner ring wall from outward bulging displacement, the probability of forming of through seams in the inner ring wall is greatly reduced, and equipment accidents suchas perforation, collapse and the like of the inner ring wall are effectively prevented.