The handheld laser welding machine is a new type of portable welding equipment. It uses high-energy laser as the heat source and can precisely and efficiently weld metal materials through the operation of the handheld welding gun head. Its core features include flexible operation, fast welding speed, small heat affected zone (less deformation), beautiful weld seam (no or little subsequent grinding is required), and low learning threshold. Ordinary workers can master it after a short training period and it is widely used in the welding processing of stainless steel, carbon steel, and aluminum alloy for kitchen cabinets, stairs and elevators, door and window guardrails, automotive parts, etc.