Laser freckle removal is the most commonly used freckle removal method at present. Freckles, sunburn and other spots left by heredity, sun exposure and other reasons can be removed by laser. With accurate laser wavelength, pulse time and energy, the laser can accurately crush the pigment particles of melanocytes, which can be effectively removed and will destroy the surrounding tissues. These crushed melanin is eliminated by phagocytosis of macrophages in the body, and finally the purpose of fading black spots and removing pigments is achieved.