At present, there are many types of lasers used for spot removal, and there are also many types of spots. Clinically, we have to choose the appropriate laser treatment according to different pigmentation spots in order to achieve good treatment results. We should know that generally speaking, spot removal refers to the removal of pigmentation spots by physical or chemical methods. Common pigment spots include melasma, freckles, nevus of Ota, brown spots, melasma and spot removal can be treated with OPT pulsed light, picosecond laser and so on. Compared with the previous chemical peeling methods, laser treatment has the characteristics of less damage and no scarring. The choice of laser treatment energy is very important, because of the big difference of individual physique and different tolerance to laser energy, the choice of treatment energy should be increased gradually from small dose first, to prevent the sudden use of large energy to cause skin burns. 2, a week before the laser treatment to do a good job of skin hydration care, daily use of hydration mask to prevent skin damage caused by dry skin, laser treatment immediately after the ice pack face, reduce the skin temperature, conducive to heat dissipation, until the skin temperature is normal, no burning or tingling sensation. Due to the increase in skin permeability after treatment, moisture loss block, within a week after treatment, you should use medical hydration mask every day to protect the skin. 3. Due to the increase of skin permeability and skin sensitivity after laser treatment, attention should be paid to sun protection, otherwise there is a possibility of aggravation of pigmentation after treatment. Especially freckles and melasma usually also do sun care, wear sun hat and sunscreen cosmetics on exposed parts.