The utility model discloses a collapsible storage cage, including the base, preceding curb plate, the left side board, posterior lateral plate and right side board, it has first cross slot to open on the base, first perpendicular groove, second cross slot and second erect the groove, first cross slot is parallel to each other with the second cross slot, first cross slot is in second cross slot below, the on -line screen storage device comprises a base, the right side is the closed end, first cross slot open end is connected with first perpendicular groove, be equipped with a fixing bolt on the lateral wall of first cross slot open end, second cross slot right side is the open end, second cross slot left side is the closed end, second cross slot open end erects the groove with the second and is connected, be equipped with the 2nd fixing bolt on the lateral wall of second cross slot open end, be fixed with the left side board through a fixing bolt in the first cross slot, preceding curb plate and posterior lateral plate, be fixed with the right side board through the 2nd fixing bolt in the second cross slot. The utility model has the advantages that: integral erection, folding convenient, easy operation, storage cage after folding conveniently piles up, the area occupied is littleer when transporting.