Scaffold

The utility model relates to a scaffold which comprises a cross rod and a vertical rod, the cross rod comprises a dovetail pin, a plug pin, a spring piece and a limiting piece, the dovetail pin is ofa left-right symmetrical structure, and a plug pin containing space corresponding to the plug pin is formed in the dovetail pin. A pair of parallel inner walls of the dovetail pin forming the plug pincontaining space are sunken from the position a certain distance away from the upper end of the plug pin containing space to form a limiting groove, and the spring piece is located on the upper portion of the plug pin containing space and arranged on the dovetail pin. And the limiting piece is connected with the bolt through a limiting hole formed in the bottom of the bolt. According to the scaffold provided by the utility model, the compression spring, the limiting piece and the limiting groove are arranged, so that the plug pin is self-locked in the dovetail pin, the safety and the stability of a connecting point of