Box type building framework with excellent stability

The box type building framework with the excellent stability comprises a cross beam and supporting columns, butt joint plates are welded to the two ends of the cross beam, the supporting columns are distributed at the bottom of the cross beam, a mounting plate is welded to the tops of the supporting columns, and the butt joint plates are welded to the top of the mounting plate. A first sliding mounting block and a second sliding mounting block are arranged at the front end and the rear end of the top of the mounting plate, first positioning bolts are connected and distributed to the top of the mounting plate, and the first sliding mounting block and the second sliding mounting block are clamped and slide at the front end and the rear end of the bottom of the cross beam; second positioning bolts are connected and distributed to the inner side ends of the first sliding mounting block and the second sliding mounting block, positioning holes are distributed in the lower ends of the front portion and the rear port