Spots, i.e., pigmentation, manifested as pigmentation diseases, including freckles, chloasma, seborrheic keratosis, etc., are treated in different ways, and clinically there is no such thing as the fastest nemesis for eliminating spots. In clinic, laser is usually used to treat pigmentation diseases. The appearance of pigmentation on the skin can also be considered to be related to the genetic cause of freckles, chloasma, seborrheic keratosis and other factors. It is usually treated by laser under doctor’s guidance, which utilizes the principle of photothermal action to break down melanin and turn it into tiny pigment particles, which can be discharged from the body through skin metabolism. There are many types of pigmentation, and the specific treatment methods are also different. It is recommended to go to the dermatology department of the hospital, and combine the treatment with the doctor’s advice, which is conducive to the improvement of the symptoms.