The invention discloses a welding and shaping mechanism of brake shoes, and mainly relates to the technical field of brake shoe manufacturing. The welding and shaping mechanism comprises a welding machine and a shaping machine, wherein a welding chuck is arranged on the welding machine; a shaping chuck is arranged on the shaping machine; a transferring mechanism is arranged between the welding machine and the shaping machine; the transferring mechanism includes a material receiving device arranged below the welding chuck and a feeding device arranged below the shaping chuck; transferring guide rails are arranged between the material receiving device and the feeding device; a material pushing air cylinder is arranged on the side, far away from the transferring guide rails, of the material receiving device; the material pushing air cylinder is in threaded connection with the welding machine. The welding and shaping mechanism of brake shoes, provided by the invention, has the benefits that the welding and shaping of the brake shoes can be combined into one process, so that the labor resources are reduced, the production efficiency is improved, occupation of production space is reduced, and the production cost is decreased.