Ships, marine equipment, and engineering machinery are all key industries for national development, and welding costs account for a large share of these two industries. Currently, these enterprises still use traditional secondary protection welding or MAG welding processes, which are complex and technologically backward. Laser arc composite welding technology, as an efficient, intelligent, and clean advanced welding technology, has been applied in these industries in Europe since the end of the 20th century. In order to break through the bottleneck technology of foreign countries in this area, Pentium Laser has successfully developed a high-power robot laser arc composite welding machine for large and complex components. Improving manufacturing efficiency and reducing manufacturing costs in the aforementioned industries has become an important means of competition in the current market.