Pain after fractional laser treatment is a normal reaction. Fractional laser belongs to exfoliative laser, the principle of which is that the laser will fractionate the CO2 laser beam into thousands of tiny light axes, and the photothermal effect penetrates into the dermis from the surface layer, exfoliates the skin layer by layer, pushes out and stimulates the formation of collagen. The depth of penetration generally reaches the dermis and sub dermis, so it will cause a certain burning sensation and pain. Fractional laser treatment pain generally lasts for a few hours can disappear on its own, if it is difficult to tolerate can be intermittent ice packs to relieve, in addition, there will be redness and scabs, need to pay attention to strict sunscreen, avoiding water, nursing care with medical aseptic restoration of the mask moisturizing, to be scabs naturally fall off is still recommended to strict sunscreen, hydration and moisturizing. If the pain is not relieved for a long time and gradually aggravated, infection, allergy and other conditions can not be ruled out, it is recommended that patients go to a regular medical institution in time to avoid delays in the condition.