The invention relates to the field of construction, in particular to a method for preventing aging of a building wall. The method comprises the steps that S1, expansion bolts are installed outside thewall; S2, a curtain wall structure is installed on the exterior of the wall through the expansion bolts in the step S1; according to the curtain wall structure used in the method, limiting blocks areinserted into limiting slots to realize the preliminary connection of curtain walls, then inserted rods are inserted into through holes by a rotating movable plate to realize the strengthened connection between the curtain walls, and the stability of the curtain wall connection is improved; and a curtain wall panel is rotated to open for ventilation and air exchange, at the same time, limiting isperformed when the curtain wall panel is rotated to open, fixing is carried out by nuts, and the sway of the curtain wall panel caused by wind is avoided.