The machine adopts the jewel-adjusting Q mode, and uses the laser to instantly emit high energy to break the pigment of the diseased tissue effectively.That is the blasting principle of the laser. The high-energy instantaneous emission of the laser, so that the laser of fixed wavelength penetrates the epidermis to the diseased tissue in a very short time (only 6 ns), and quickly breaks down the corresponding pigment, and the corresponding pigment cluster is blasted by the rapid expansion of the heat. Fragmentation, part of (superficial epidermis) pigment clusters are successively ejected in vitro, and a part (based on tissue) pigment clusters are broken into fine particles that can be engulfed by macrophages in the human body, digested by macrophages, and finally passed through the lymph in human body.