Fiber laser marking machine is a new generation laser marking machine system developed by the most advanced laser technology in the world. The optical fiber is used to output the laser, and then the high-speed scanning galvanometer system is used to realize the marking function. The diameter of the focused spot is less than 20um, the resolution is 1 micron, and the electro-optical conversion efficiency is up to 30%. The whole machine is cooled by air cooling, with small size and good output beam quality. It has the functions of high efficiency, long life and maintenance free that traditional lasers do not have.