The robotic arm fiber laser welding machine injects a high-energy laser beam into the optical fiber. After long-distance transmission, it becomes parallel light through the collimator, and then focuses on the workpiece for welding. It is a laser welding equipment. For welds that are difficult to access, it provides non-contact welding with flexible transmission and greater flexibility. The laser beam can be splitted, enabling simultaneous multi-beam processing, providing conditions for more precise welding.