Q-switch Nd YAG laser tattoo removal is one of the most popular technologies. Its 1064nm wavelength can deeply penetrate the skin and accurately act on dark tattoo pigments such as black and blue, while 532nm is very good to remove colorful tattoos. The powerful energy instantly breaks up the pigment particles and is stable and accurately adjusted, which can adapt to various types of skin and tattoo, and effectively reduce damage to surrounding normal tissues. It has rich clinical application experience, high safety, relatively low risks of postoperative infection and scarring, and a relatively smooth recovery process. It is a reliable technical means to remove dark tattoos, which can help patients gradually get rid of tattoo troubles and restore clean skin. Q-switch Nd YAG laser can also be used well for carbon facial peeling and treating foot fungus, birthmark removal and age spot removal.