Hemangioma and vascular malformation are two different lesions with completely different clinical manifestations, courses and regressions. They should not be confused with each other. Microvascular malformations include: 1) erythema or wine spots; 2) microvascular dilatation; 3) spider nevus; 4) a combination of various vascular malformations with multiple organ involvement. Treatment methods: Various laser treatments are mainly used. Krypton ion laser (413nm) is the best means to treat micro-venous malformations. It is a non-thermal photodynamic therapy that uses a laser with a wavelength that matches the photosensitizer, thus avoiding the formation of skin trauma and achieving the goal of selectively destroying the deformed micro-vein and protecting the surrounding normal tissue structure. Note: Avoid direct sunlight and bright light within 48 hours of treatment.