Handheld Fiber laser welding machine is a laser welding equipment which couples the high energy laser beams into theoptical fiber, after long-distance transmission, then transformed into parallel lights through colimating mirror to beocused on the work piece to implement the welding. The welding methods include vertical welding, paraller weldingstitch welding and so on. Hand-held fiber laser welding machine is mainly used for laser welding of long-distance andlarge workpieces.