The hand-held laser welding machine adopts a new generation of fiber lasers and is equipped with self-developed laser welding heads. It has the advantages of simple operation, beautiful weld seam, fast welding speed and no consumables. Welding of metal materials such as plates, iron plates and galvanized plates. It is 3-10 times the speed of conventional argon arc welding plasma welding, power consumption is 10-20% less than traditional process, save 2-3 labor costs.