Birthmarks, medically known as “mother spots” or “moles”, are abnormal growths of skin tissue during development, resulting in abnormalities in shape and color on the skin surface. Generally speaking, birthmarks can be detected at birth, or they may surface slowly after a few months of life or after puberty, and in a few cases they may manifest after pregnancy and childbirth. The incidence of birthmarks in newborns is about 10% and can be considered very common. Most birthmarks only affect aesthetics, but some birthmarks can be combined with abnormalities of body organs and even have the possibility of malignant changes, which must be treated actively. The common pigmented type includes nevus of Ota, pigmented nevus, coffee spot, freckle, Mongolian spot, etc.; the vascular type includes hemangioma and vascular malformation, the former refers to the former strawberry-like hemangioma and cavernous hemangioma, the latter includes venous malformation, arterial malformation, etc. The most common is bright red nevus. Clinically, black birthmark, cyan birthmark, brown birthmark, red birthmark, purple birthmark and skin color birthmark can be seen in the form. If the birthmark grows on the face, hands and feet and other obvious parts of the body, people are troubled, some people draw heavy makeup every day to cover it up, and some people have low self-esteem and do not go forward in social life because of it. Birthmarks on the face can easily be seen by others, which can cause psychological damage to the patient; especially for children, they are more likely to have low self-esteem or autistic tendencies during their growth, which can affect their psychological development and turn into personality problems later. Therefore, in the United Kingdom, Canada and Japan, legislation has been enacted to provide free insurance coverage to help school children remove their facial birthmarks so that they will not need to make greater efforts to correct them psychologically. In order to prevent children from being looked at differently by their peers and affecting their interpersonal relationships, it is best for children with facial birthmarks to be treated early before they start school. In the past, many methods were applied to solve birthmarks, such as skin grafting, skin grinding, liquid nitrogen cryotherapy, superficial radiation, isotope therapy, etc. However, these therapies were limited in clinical treatment due to low efficacy or unavoidable adverse effects, such as serious complications like scar formation, hyperpigmentation or pigment loss. Until the 1980s, the emergence of the selective photothermal action theory of Anderson and Parrish in the United States has greatly improved the safety and effectiveness of dermatological lasers, and with the emergence of various new lasers there has been a substantial breakthrough in the treatment of birthmarks. Nowadays, various lasers for pigment lesions (including Q-switched Nd:YAG laser, Q-optical ruby laser, Q-switched emerald laser, etc.) can selectively destroy pigment clusters, and lasers for vascular lesions (including pulsed dye laser, long-pulsed Nd:YAG laser, etc.) can target hemoglobin in blood vessels for heating to achieve treatment purpose, and these lasers generally do not leave These lasers usually do not leave scars after treatment. Therefore, except for severe birthmarks that still require surgical treatment, various new lasers have become the best choice for birthmark removal. With the successful application of Q-switched laser developed according to the theory of selective photothermal action, the treatment of pigmented birthmarks has undergone a fundamental change in the last decade or so. Some pigmented birthmarks of true and epidermal origin (e.g. nevus of Ota, freckles, etc.) have obtained almost 100% clearance rate, and some congenital nevi and coffee spots can also be applied with Q-switched laser and obtain better results. Our experience in applying the new laser to treat children with nevus of Ota shows that children respond better to the laser than adults and have a lower risk of side effects. Treatment of children early in their preschool years can result in the complete elimination of nevus of Ota. This means that the psychological damage caused by growing birthmarks in children can be avoided. We therefore believe it is important to focus on the advantages of early treatment in order to avoid the risk of recurrence, emotional stress and expense of multiple treatments later in life. Our current experience is that treatment with a wavelength of 1 064 nm Q-switched Nd:YAG laser every 8-12 weeks can be cured with about 5 treatments. Through years of experience, we believe that parents and/or patients should be encouraged to receive treatment as early as possible. Vascular birthmarks, on the other hand, are usually treated with pulsed dye laser, but the effect is not as good as pigmented birthmarks. For example, vascular nevus can be removed by laser, usually the 1st two treatments are the most effective, after that, the treatment effect will decrease as the blood vessels become deeper, usually requiring up to 5-10 or more treatments. The treatment of hemangiomas is more complicated. For superficial lesions such as strawberry hemangioma, the laser can be applied early with excellent results; for deeper lesions such as cavernous hemangioma, the laser can only remove the superficial vessels as an adjunctive treatment, usually with sclerotherapy or corticosteroid injections, or even surgical removal. The traditional belief is that hemangiomas will naturally shrink and do not require treatment, but delayed treatment results in unsightly scars due to incomplete shrinkage of the hemangioma. Therefore, although there is some controversy in the treatment of hemangioma, the latest view in China and abroad is that there should be a shift from a benevolent neglect strategy to a more desired treatment strategy. The current view is to treat them before it is too late so that nothing can be done if scarring occurs without complete regression, so we recommend treatment as soon as they are detected. Lasers have provided a breakthrough in the treatment of vascular lesions and have become indispensable, but limitations remain. The lasers currently used can only destroy superficial blood vessels, and no single laser can successfully treat all vascular lesions. Vascular malformations consisting of large and deep vessels still cannot be treated with lasers and should be treated with a combination of other modalities. However, there is a bad tendency in some medical institutions to treat all lesions with the same modality, which leads to the question of which treatment modality is best for which lesion. The so-called individualized treatment means that there is no best treatment but the most suitable one for you. Although laser treatment of birthmarks is effective, it is important to emphasize that not all birthmarks can be removed 100% of the time and that it is more expensive and not every birthmark is suitable for laser removal. Therefore, I suggest that parents should consult an experienced medical professional to make an accurate diagnosis of the impact of the birthmark on the body and the possibility of removing it. The other thing is that if you have a birthmark, you should face it correctly, do your psychological adjustment, don’t be afraid, communicate more with people, and know that full confidence can exude beauty, and others will definitely give you back kind treatment.