Freckles are brown spots that occur mainly on the cheeks and appear as multiple yellowish-brown or brownish-beige spots with variable number, isolated and non-fused, and generally symmetrically distributed. It is mostly seen in women, commonly on the cheeks and the back of the nose, but also on the exposed parts of the neck, shoulders, back of the hands, forearms, chest and back. The disease is autosomal dominant and patients often have a family history of the disease, which is light in winter and heavy in summer and worsens after sun exposure. Laser freckle removal is the preferred way to improve freckles. Laser freckle removal is relatively safe, but there are some risks if the equipment performance is not good or the operator does not have enough clinical experience. Laser freckle removal may cause erythema, purpura, blistering or crusting, etc. The nature of laser action is thermal damage, and in most cases, these symptoms are inevitably accompanied by the treatment, sometimes it is a manifestation of energy regulation and body maladjustment, which requires some time to recover. In addition, pigmentation is also a problem that may occur after laser surgery. This condition is generally safe for most people who pay attention to sun protection after laser cosmetic treatment, and they can achieve the effect of whitening and spot removal. If after the laser freckle treatment, due to the lack of proper aftercare such as sun protection, pigmentation may occur and the skin tone may be darker than before the treatment, which will then require weeks or even months of recovery. Therefore, in order to treat freckles by laser, in addition to choosing a professional doctor in a regular institution to perform the operation, it is also necessary to take proper post-operative care so as to guarantee the treatment safety as well as the effect.