Precautions after laser spotting: 1, directly, this operation is non-invasive and does not require anesthesia, but there will be tingling during the operation and blood beads will appear after the operation. After the first operation, the spots will be deeper than before, and the second operation will gradually fade, which should be noted. 2. After the operation, the skin in the treatment area will have a slight burning sensation and slight redness, which is a normal reaction. If necessary, local cold compress can be done for 20-30 minutes to reduce or alleviate the phenomenon of fever and redness. 3. Keep the diagnosis and treatment area clean to avoid infection and friction. If there is a fool's skin at the diagnosis and treatment site, it will automatically fall off after 7- 10 days. Don't remove it by hand, otherwise pigmentation is very important and it is easy to leave scars. 4. After the scab falls off, there may be temporary pigmentation in some parts. In order to prevent or alleviate this phenomenon, sunscreen and freckle-removing products can be used reasonably. Try to avoid strong light, and pay attention to applying high-intensity sunscreen when necessary. 5. Don't wash your face for a week after operation, just wash it locally with a special towel.