The automatic three-dimensional stacking equipment for the steel structural parts comprises an I-shaped advancing rail frame, a movable tray, a static tray mechanism, a hollowed-out
silica gel pad and a containing table, four telescopic supporting legs are fixedly mounted at the bottom of the I-shaped advancing rail frame, and mounting bases are fixedly mounted at the bottoms of the four telescopic supporting legs; when the air guide
pipe is opened, the rectangular coil
pipe and the ferromagnetic
pipe at the bottom generate an air pressure
adsorption effect, and when the air guide pipe is closed, the rectangular coil pipe and the ferromagnetic pipe at the bottom are not influenced by air pressure adsorption, and then adsorption of a short section of steel structural part is matched, so that the adsorption surface of the ferromagnetic pipe and the
silica gel soft head can be adjusted; and then adsorption of different steel structural parts, such as adsorption of
steel plates of different sizes, is matched, the overall design can adapt to various steel structural parts, the use of molds and funds is reduced, the capacity of being suitable for various production lines is integrally improved, and the production efficiency is improved.