The invention provides a steel structure scaffold supporting and moving device which comprises a base and a mounting frame, two parallel sliding grooves are formed in the surface of the upper end of the base, side grooves are formed in the surfaces of two side walls of each sliding groove, and a plurality of clamping teeth are fixedly connected to the bottoms of the side grooves. A rotating handlepenetrates through the left side wall of the mounting frame, a rotating disc is fixedly connected to the tail end of the rotating handle, and a guide column is fixedly connected to the edge of the right end face of the rotating disc. The adjustable moving device is arranged at the bottom end of the scaffold, so that the stability of the scaffold is improved, the operation is convenient, and the moving distance of the scaffold can be accurately positioned. The problems that an existing steel structure scaffold is poor in stability, troublesome to move and inaccurate in positioning are solved.