The most common laser marking machines on the market are mainly CO2 laser marking machines and YAG laser marking machines. Later, YAG laser marking machines were gradually replaced by semiconductor laser marking machines, becoming the model with the largest market share of laser marking machines. In addition, there are high-end end pumped laser marking machines, fiber laser marking machines, ultraviolet laser marking machines, and so on.

Laser marking is the use of a laser beam to permanently mark the surface of various substances. The effect of marking is to expose deep substances through the evaporation of surface substances, or to "engrave" traces through chemical and physical changes in surface substances caused by light energy, or to burn off some substances through light energy, displaying the desired etched patterns and text.