Plastic soldering laser welding machine is a device that uses semiconductor materials as the working substance to generate laser. The laser generated by semiconductor chips is coupled through optical fibers, and multiple low-power semiconductor lasers are coupled into the processing fiber through fiber bundling to form high-power laser output. The use of heat generated by laser beams to heat materials is mainly applied in the sealing welding of plastics and soldering of electronic devices. Welding products involve medical, 3C accessories, automotive parts, motors, coils, sensors, signal antennas and other fields.