It can be divided into laser cutting and laser gasification. Most of them are suitable for laser cutting, such as deep lesions and deep plastic surgery, such as benign and malignant skin tumors, double eyelid plasty and abdominal liposuction. Laser vaporization is suitable for treating superficial skin lesions and cosmetic surgery. Such as freckles, chloasma, wrinkles, various scars, pigmented nevus, too short lingual frenulum, abnormal wart, flat wart, etc.