The automatic irregular shape can body production machine is designed for manufacturing irregularly shaped cans and integrates the processes of can body feeding, welding seam positioning, expanding, flanging and output into a single production process. This can equipment reduces and optimizes the carrying and loading processes during various processes so as to reduce production costs and improve production efficiency. This can machine is equipped with a protection device and a synchronous control to ensure the reliable can conveying and product quality. The automatic irregular shape can body production machine is available as a single channel or double channel type, with the double channel type offering double the production capacity.