The working mode of hand-held fiber laser welding machine, hand-held welding is flexible and convenient, and the welding distance is longer. Using a handheld welding gun to replace the previous fixed light path has the advantages of simple operation, beautiful welding seams, fast welding speed and no consumables. For welding thin stainless steel plates, iron plates, galvanized plates and other metal materials, it can perfectly replace traditional argon arc welding, electric welding and other processes. Hand-held fiber laser welding machine is mainly used for laser welding of long-distance and large workpieces.